What's a Motorsailer?

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" height=90 BGCOLOR="#006699" TEXT="#080000" background="044fd5a3.jpg"> <bR> <div> <FONT SIZE="5" COLOR="#0000CC" FACE="Arial" ><B>Motorsailers & Motorsailing</B></FONT><FONT SIZE="1" COLOR="#0000CC" FACE="Arial" ><B> </B></FONT><B>   </B><B> |     </B><A HREF="index.htm" TARGET="_top" TITLE="Motorsailers Motorsailing"><U><B>Home</B></U></A></div> <div> <B> </B><B>What's a Motorsailer?</B><B>   |   </B><A HREF="label.htm" TARGET="_top" TITLE="Labeling System"><U><B>Labeling System</B></U></A><B>   |   </B><A HREF="monohulls.htm" TARGET="_top" TITLE="Monohulls"><U><B>Monohulls</B></U></A><B>   |   </B><A HREF="multihulls.htm" TARGET="_top" TITLE="Multihulls"><U><B>Multihulls</B></U></A><B>   |   </B><A HREF="links.htm" TARGET="_top" TITLE="Motorsailers links"><U><B>Motorsailers' links</B></U></A><B>   |   </B><A HREF="forum.htm" TARGET="_top" TITLE="Letters Forums"><U><B>Letters & Forums</B></U></A><B>   |   </B><A HREF="id27.htm" TARGET="_top" TITLE="Anchoring"><U><B>Anchoring</B></U></A><B>   |   </B><A HREF="contacts.htm" TARGET="_top" TITLE="Contacts"><U><B>Contacts</B></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> </div> </td> </tr><tr> <td valign="top" height=390 BGCOLOR="#FFFFFF" TEXT="#080000" background="04603043.jpg"> <div> <I>What's a Motorsailer?</I></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="#experts_opinions_on_motorsailers__" TITLE="Whats a Motorsailer?"><U><B>Experts' opinions on motorsailers & motorsailing</B></U></A><B> (Click to go)</B></div> <bR> <div> <I><B>"I sincerely believe that a well conceived Motor/Sailer is the most practical, capable, comfortable, economical vessel for serious ocean passagemaking......and retaining the ability to explore the most remote coastal areas."  </B></I><A HREF="http://www.runningtideyachts.com/motorsailing/" TARGET="_top" TITLE="http://www.runningtideyachts.com/motorsa"><U><I><B>Brian Eiland </B></I></U></A></div> <bR> <div> All contributions on motorsailers matters are most welcome. </div> <div> Write to: <B>g.gefaell</B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B><at></B></FONT><B>mundo-r.com    </B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>(Substitute <at> with @ )</B></FONT></div> <bR> <bR> <bR> <div> <B>What's a motorsailer?</B></div> <div> <B> by Guillermo Gefaell.</B></div> <bR> <div> Many has been written and discussed about what can be understood as a motorsailer nowadays. You can find several opinions and thoughts about motorsailers and motorsailing, downwards in this page, from a variety of experts. Today the motorsailer concept seems to have widened from that of a fishing boat with small steading sails, to ultimate fast expedition catamarans, or even trimarans, as some builders understand the concept nowadays. On the other hand, slipping through the range of the ubiquitous relation of <I><B>sailing ability vs. powering ability  </B></I><I>,</I> we find lots of imprecise talking about 30-70, 50-50 and even down to 20-80 combinations. </div> <bR> <div> <IMG SRC="07bac260.jpg" border=0 width="172" height="294" ALIGN="LEFT" HSPACE="10" VSPACE="2">Some authors and boatyards include today into the motorsailer philosophy pure sailing boats (even light displacement ones), just because of the addition of a low profile pilothouse and a powerful engine. On the contrary,  there are some fishing boats transformed to recreational, with a couple of steadying sails, also heartly classified as motorsailers by their owners. </div> <bR> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="645" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 88 ><NOBR><div> <IMG SRC="07a7d470.jpg" border=0 width="125" height="71" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <IMG SRC="0827b520.jpg" border=0 width="123" height="82" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <IMG SRC="07d79480.jpg" border=0 width="121" height="72" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <IMG SRC="07f79490.jpg" border=0 width="121" height="73" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <IMG SRC="08172470.jpg" border=0 width="114" height="71" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> </tR> </TABLE></div> <bR> <div> If you navigate through the enormous amount of web pages where sailing boats are for sale or hire, you'll find yourself confusingly struggling with the question of what on earth a motorsailer is, as so many different boats are offered under this description, with a particular accent in the charter world, where almost everything, but the obvious, is called a motorsailer. </div> <bR> <div> From the point of view of Francis Kinney's motorsailers definition you'll find downwards in this page, almost all sailing boats with an engine under production nowadays could be classified as motorsailers: Engine powering and running a boat today is proportionally much cheaper than it was 50 years ago; and with the new breed of small sized and powerful diesel engines, added to the general boaters appetency for  fast passages, it makes no sense for the sailing boat builder/designer to specify propulsion systems not able to bring the boat well up to its hull speed (more or less 1.34 Froude's number); unless we are talking about competition machines, where saving even grammes is important, of course!</div> <bR> <div> So, to avoid misunderstandings, I think we should always refer to some simple parameters that easily tell us if a certain boat may be considered a motorsailer or not. Actually there are some well known ones of easy and universal use, that more or less define motorsailers. One of them is the  <B>Displacement / Waterline length</B> ratio, D/Lwl. <B>Motorsailers use to move in the 300+ zone</B> for this parameter.  The above mentioned <B>Sailing / Powering ability</B> ratio, <B>varying from 20/80 to 50/50</B>, also give us a clue, but it is quite imprecise because is more based on wishful thinking than in empirical data. The <B>Sail area / Displacement ratio,</B> SA/D, with <B>motorsailers being under 14</B>, is also an useful and simple parameter.  </div> <bR> <div> But some times <B>Displacement</B> is a not a well known factor (many times just guessed) and parameters using this factor are not easily workable without a calculator, while <B>Sail area</B> and <B>Waterline length</B> are simple and straightforward data, able to be easily measured with enough accuracy by non specialized people. So I think we should have formulae based in these two data, easy and simple to be obtained by most owners and <I>aficionados</I>. Shall we be able to find such formulae? We'll try downwards in this paper.</div> <bR> <div> Now, as motoring is an essential motorsailer's characteristic, we should define what amount of engine power should be considered the minimum for a proper motorsailer, as well as what should be the minimum sail area allowing for enough sailing ability for a safe sailing under sails alone (Of course assuming some kind of hull and rig efficiency!).</div> <bR> <div> I have analized Banjers' parameters with several sail area plans, and I have come to the already known conclusion that, to get what is known as a<B> 50/50 motorsailer, </B>you should go up for an<B> SA/D ratio of 14</B>.  A ratio of 9 would do for a 40/60 motorsailer (40% sail, 60% power) and,  from my point of view, <B>SA/D ratio should never be less than 8 for a minimally effective sailing rig</B>, which is something like <B>37/63</B> and what seems to be the lower limit for a "secure" sail area, that is, having enough sail power to claw off a lee shore under sail alone as Kinney states.<B> </B>Let's say, then, that with a<B> SA/D under 8, what we have are motor boats with auxiliary or steadying sails, </B>not effective motorsailers.  This coincides with Skene's book stated formula which says that <B>to have a motorsailer you need at least as many sail area as the squared Lwl divided by two</B>.</div> <bR> <div> On the upper side, <B>we shouldn't have lots of sail area</B>, because I think motorsailers have to be effective enough under sail alone, for sure, but sails have also to be easily manegeable and center of effort has to be kept as low as possible, so the induced heel is comparatively low. <B>Low aspect ketch rigs are probably the most adecuate</B> to this end, and even the use of gaffs may have to be considered as a bonus. Maybe these kind of rigs are not highly efficient going to winward, absolutely, but we are talking about motorsailers: We should almost <B>always motorsail when beating hard to winward</B> and, on the other hand, we'll have a comfortable rig to manage strong winds as well as an efficient one when running in a tradewind.  </div> <bR> <div> And, in addition to these considerations, we should not forget that one of the important characteristics of motorsailers is having a <B>high loading capacity</B> without losing too much performance, as well as enough internal volumes to allow for comfortable accomodation for long periods of time. All this doesn't call for highly effient underbodies for when under sail alone, so it makes no sense to go for big amounts of sail area, nor high aspect ratio rigs. Either it doesn't call for a catamaran concept, in my humble opinion, although I know many disagree. And catas or tris have the extra penalty of much higher marina fees in most places.</div> <bR> <div> I think that <B>with SA/D ratio being over 16, what we get are different types of sailing boats</B>, from heavy oceanic cruisers up to modern racing machines, not motorsailers. Boundaries are not strict, of course, and most times categories of heavy oceanic cruisers and motorsailers overlap one with the other, and it's difficult to say which is what.</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>Banjers Main Data</B></div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="302" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 281 ><NOBR><div> <B>LOA :      36.52'</B></div> <div> <B>Lwl:        31.17'</B></div> <div> <B>Beam:   11.42'</B></div> <div> <B>Bwl :        9.84'</B></div> <div> <B>Draft:       4.43'</B></div> <div> <B>Displacement: 27778 pounds</B></div> <div> <B>Sail Area : 301, 450 & 807 sq feet</B></div> <div> <B>                     (28, 42 & 75 sqm)</B></div> <div> <B>Power: 61 or 95 BHP (DIN)</B></div> <div> <B>D/Lwl:     409.5</B></div> <div> <B>HSPD:    7.48 kn</B></div> <div> <B>SA/D:      5.25, 7.88, 14.08</B></div> <div> <B>Lwl/B:     2.73</B></div> <div> <B>MCR:      61.57</B></div> <div> <B>CSF:       1.31</B></div> </NOBR></tD> </tR> </TABLE></div> <bR> <div> <B>D/Lwl : Displacement / Waterline length  </B></div> <div> Displacement to LWL: A medium value would be 200. 300 would be high (Heavy Cruising Boat) and 100 would be low (Ultra Light Displacement-ULDB). Boats with low numbers are probably uncomfortable and difficult to sail.</div> <bR> <div> <B>HSPD: Hull speed</B></div> <div> Hull Speed: This is the maximum speed of a displacement hull. Somewhat tricky, as Lwl is not static an varies with speed and heeling. It is possible to surpass the HSPD even for "heavy wheights". For instance, Banjer's HSPD has been found in real life tests to be as high as 8.5 knots, while theoretically is 7.5. Some racers and lighter boats are able to achieve even greater speed by lifting over the bow wave and riding on top of the water, that is, planing. Slender catamaran hulls are able also of easily surpassing theoretical HSPD.</div> <bR> <div> <B>SA/D:  Sail area / Displacement</B></div> <div> Sail Area to Displacement: The sail area is the total of the main sail and the area of the front triangle. A racing boat typically  has large sail area and low displacement. A number less than 13 most probably indicates that the boat is a motorsailer or a motor boat with auxiliary sails. High performance boats would be around 18 or higher.</div> <bR> <div> <B>Lwl / B : Waterline length / Beam </B></div> <div> LWL to Beam: A medium value would be 2.7 ;  3.0 would be high and 2.3 would be low</div> <bR> <div> <B>MCR:  Motion Comfort Ratio</B></div> <div> Motion Comfort: Range will be from 5 to 60+ with a Whitby 42 at the mid 30's. The higher the number the more comfort in a sea. This figure of merit was developed by the Yacht designer Ted Brewer and is meant to compare the motion comfort of boats of similar size and types.</div> <bR> <div> <B>CSF: Capsize ratio</B></div> <div> Capsize Ratio: A value less than 2 is considered to be relatively good; the boat should be relatively safe in bad conditions. The higher the number above 2 the more vulnerable the boat. This is just a rough figure of merit and controversial as to its use.</div> <bR> <div> To better understand some of the parameters and ratios up here, you may go toTed Brewer's <A HREF="http://www.tedbrewer.com/yachtdesign.html" TARGET="_top" TITLE="http://www.tedbrewer.com/yachtdesign.htm"><U><B>Understanding Yacht Design</B></U></A>, or  <A HREF="http://dan.pfeiffer.net/boat/ratios.htm" TARGET="_top" TITLE="http://dan.pfeiffer.net/boat/ratios.htm"><U><B>Dan Pfeiffer's</B></U></A><B>  </B>Sail Boat Design Ratios</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>My own Banjer  "Marie", with an SA/D ratio under 8</B></div> <div> <IMG SRC="0770ddb0.jpg" border=0 width="269" height="219" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B>I consider her as a motor boat with auxiliary sails. </B></div> <div> <B>Her actual rig is pretty nice when in strong winds, but she hardly moves in someting less than a force 4.</B></div> <div> <B>As I do not want higher masts, because of some bridges at my home waters,</B></div> <div> <B>I'm considering about a gaff rig, or even about mounting an square sail in the main mast,</B></div> <div> <B>as I've seen in some Ray Benford's designs, to allow for higher efficiency when running.</B></div> <bR> <div> On the engine's power side, we need enough power to easily attain hull speed, as said before, but I should say even having enough reserve of power to beat to windward in strong gale conditions.  For <B>Banjers like motorsailers</B>, I think we should have a<B> </B>rated<B> BHP (DIN) of no less than 1.85 * Lwl </B>(feet), or <B>6.07 * Lwl </B>(metres)  to achieve this, assuming the prismatic coefficient is adecuate to allow for efficient forms at hull speed, something like 0.63, as well as mounting an efficient 3 blades propeller turning at an r.p.m. number as slow as practical (With most actual medium speed diesel engines, this calls for a 3:1 gear ratio).</div> <bR> <div> I think also that, for Banjers like boats, it is <B>not necessary at all</B> to go for an engine's power<B> higher</B> than <B>2 * Lwl </B>(feet). Using the 1.85 factor equation provides, to my experience, power more than enough to beat to winward in strong gale conditions and, definitively, going higher than 2 means unnecessarily overpowering the boat and probably a nice way of expending money. So I'll tighten to the 1.85 factor for the time being.</div> <bR> <div> And last but not least, appearance: From my point of view, the overall design of the boat should bring us an <B>air of traditional reminiscences</B>, bred on local working boats, the origin of the class. To this end, motorsailers should be, in my humble opinion, <B>single hulled,</B> with lines more or less derived from working boats (so <B>long keelers</B>), and have a proper, enclosed and protruding <B>pilothouse</B>,<B> </B>which's main use should be to steer and navigate,<B> </B>not to be a deck saloon. But let's not make of this last point a controversial item, because there are some beautiful examples of real motorsailers around there with no pilothouses, as my friend Dees' beautiful "Kittyhawk". So we'll talk about <B>Motorsailers</B>, in general, and <B>Pilothouse Motorsailers</B> as a class on its own.</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>Kittyhawk</B></div> <div> <IMG SRC="07611ba0.jpg" border=0 width="273" height="186" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> Now, avoiding the pilothouse issue and aesthetical considerations, let's try to arrive to simple formulae based on SA and Lwl for "classic" motorsailers, as we told before. Is that possible? We'll try. Let's go to it:</div> <bR> <div> First of all it has to be clear that we will work only with <B>munohulled long-keeled boats, conceived to be fuel-efficient under the power of an optimized propeller</B>. Under these limitations, we may define Classic Motorsailers (as a first approach), as boats complying with the following:</div> <bR> <bR> <DIV ALIGN="LEFT"></DIV> <div> Classic Motorsailers formulae</div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="240" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="228"><div> <B>BHP(DIN) > F * Lwl</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="228"><div> <B>8 < SA/D < 14</B></div> </tD> </tR> </TABLE></div> <div>  <FONT SIZE="3" COLOR="#0000CC" FACE="Arial" > (Imperial units)</FONT></div> <bR> <div> Notes: </div> <bR> <div> 1.- "F" would be a factor given in a table for different ranges of length, as power varies non linearily with Lwl. And also, as for a given Lwl power needed for a given speed varies linearily with displacement, we'll have an eye on this.</div> <bR> <div> We'll try to find how this "F" factor varies for different lengths with the <B>help of readers</B>. <B>I</B><B>'l</B><B>l be grateful to people sending me their motorsailer's (Or one known to them) main data,</B> by fulfilling the form downwards in this page.</div> <bR> <div> 2.- Second equation is more or less the same than saying that a motorsailer should have a <B>sail/power ratio within the 37/63 to 50/50</B> range. Boats with <B>a 35/65 ratio or less</B> should be definitively defined as <B>motorboats with auxiliary or steadying sails</B>, not proper motorsailers. </div> <bR> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>TABLES OF MOTORSAILERS' DATA</B></div> <bR> <div> Let's now work data from several motorsailers we got navigating Internet and also with the help of some friends:</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>Motorsailers data:</B></div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="883" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 39 WIDTH="122"><div> <B>Model</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>Fisher 25</B></div> <div> <B>(Ketch)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>Dartsailer 27</B></div> </tD> <tD VALIGN=TOP><NOBR><div> <B>Claymore 30</B></div> <div> <B>(Sloop)</B></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="104"><div> <B>Cape Dory 30 MS</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>Fisher 34</B></div> <div> <B>(Ketch)</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>Banjer 37</B></div> <div> <B>(75 sqm)</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>Fisher 37</B></div> <div> <B>(Ketch)</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="122"><div> <B>Lwl (ft)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>21.00</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>22.97</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>24</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>26.51</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>29.83</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>31.17</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>32.5</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="122"><div> <B>D (lb)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>10080</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>11032</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>14112</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>11500</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>25780</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>27800</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>31360</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="122"><div> <B>D/Lwl</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>486</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>406</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>456</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>276</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>433</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>410</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>408</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="122"><div> <B>SA (sqft)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>290</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>335</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>405</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>477</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>626</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>807</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>844</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="122"><div> <B>SA/D</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>9.94</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>10.81</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>11.1</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>14.98</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>11.48</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>14.07</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>13.58</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="122"><div> <B>BHP (DIN)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>22 - 27</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>41</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>36</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>?</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>61</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>61</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>82</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="122"><div> <B>K</B></div> </tD> <tD VALIGN=TOP><NOBR><div> <B>1.05 - 1.29</B></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="93"><div> <B>1.79</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>1.5</B></div> </tD> <tD VALIGN=TOP WIDTH="104"><div> <B>?</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>2.06</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>1.96</B></div> </tD> <tD VALIGN=TOP WIDTH="102"><div> <B>2.52</B></div> </tD> </tR> </TABLE></div> <div> <B>Notes: </B></div> <div> <B>The Fisher 25 is really a heavy-weight. 22 HP seem to be good enough to move her even against strong winds, as per Dave Herndon feedback,  but  newer units come now with a 27 HP engine.</B></div> <div> <B>The Dartsailer seems to be quite overpowered.</B></div> <div> <B>Cape Dories are quite beamy and light.  </B></div> <div> <B>Actual "aged displacement" for Banjers seems to be more in the vicinity of 31000 lbs, so D/L is around 455 and SA/D around 13.8</B></div> <div> <B>Banjers are considered with Perkins 4236 engine. Banjers with Perkins 6354 (95 BHP cont.) are quite overpowered.</B></div> <div> <B>Fisher 37 seems to be also overpowered.</B></div> <bR> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>More data...</B></div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="839" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 39 WIDTH="127"><div> <B>Model</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>Panoceanic 38</B></div> </tD> <tD VALIGN=TOP><NOBR><div> <B>Northeast</B></div> <div> <B>400</B></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="93"><div> <B>Panoceanic 43</B></div> </tD> <tD VALIGN=TOP><NOBR><div> <B>Perry 43 MS</B></div> <div> <B>(Ketch)</B></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <B>Alaska 43</B></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <B>Gartside 45</B></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="93"><div> <B>Panoceanic 46</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="127"><div> <B>Lwl (ft)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>31.13</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>34</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>36.33</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>36</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>38</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>38.5</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>36.5</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="127"><div> <B>D (lb)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>18750</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>21900</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>27500</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>34000</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>35000</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>35380</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>33500</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="127"><div> <B>D/Lwl</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>255</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>249</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>256</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>325</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>285</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>277</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>307</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="127"><div> <B>SA (sqft)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>719</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>686</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>970</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>832</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>1048</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>937</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>1093</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="127"><div> <B>SA/D</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>16.3</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>14.02</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>17.03</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>12.62</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>15.67</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>13.91</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>16.83</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="127"><div> <B>BHP (DIN)</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>?</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>82</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>?</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>67</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>70 </B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>80</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>?</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="127"><div> <B>K</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>?</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>2.41</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>?</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>1.86</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>1.84</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>2.08</B></div> </tD> <tD VALIGN=TOP WIDTH="93"><div> <B>?</B></div> </tD> </tR> </TABLE></div> <div> <B>Notes:</B></div> <div> <B>Panoceanics are better classified as fast oceanic cruisers, rather than motorsailers. Anybody knows engines powers?</B></div> <div> <B>Northeast 400 seems also to be quite overpowered. She performs an interesting AeroRig.</B></div> <div> <B>I'd say there are two different schools for monohull motorsailers design: Northern and Southern. Northerns are usually heavywheights (D/L>400), bred on displacement fishing boats lines and, on the contrary,  Southerns tend to be lighter (250-350), being rather bred on sailing boats lines.</B></div> <bR> <bR> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>CONCLUSIONS (Tentative)</B></div> <bR> <div> <B>1.- Analizing the upper data, and eliminating some extreme values, we find, as first approach that, for our concept of a proper "classic" motorsailer and always talking of </B><FONT SIZE="3" COLOR="#0000CC" FACE="Arial" ><B>DIN BHP</B></FONT><B>, engine's rated power should be in the range of:</B></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="268" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 39 ><NOBR><div> <B>HP = 5 * Displ. (tons or tonnes)</B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>  </B></FONT></div> <div> <B>(or 2.23 HP per 1000 lbs)</B></div> </NOBR></tD> </tR> </TABLE></div> <div> <B>Formula 1</B></div> <div> <B>Many boats go higher nowadays, certainly, but I think it's really not necessary, unless there are a lot of appliances aboard needing a huge extra energy, or you want to go into semi-displacement or planning mode, which is far away from motorsailers concept, in my opinion. This formula uses Displacement, so it's applicable to all monhulled moitorsailers, be them heavy or light ones. </B></div> <bR> <bR> <div> <B>2.- If we do not know displacement, but suspect the boat we are considering is a heavy weight motorsailer </B><FONT SIZE="3" COLOR="#0000CC" FACE="Arial" ><B>(D/L over 400)</B></FONT><B>, we may measure Lwl and, although things are more tricky here, use the following approximate formula for </B><FONT SIZE="3" COLOR="#0000CC" FACE="Arial" ><B>Lwl between 20 and 40 feet:</B></FONT></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="264" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 20 ><NOBR><div> <B>HP = 0.1 * Lwl * (Lwl - 10)</B></div> </NOBR></tD> </tR> </TABLE></div> <div> <B>Formula 2</B></div> <bR> <div> <B>3.- Also taking in account the analized data and making things easier to remember, we can refine the previous SA/D factor criteria and say that, for an efficient motorsailer, values should be between:</B></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="267" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="255"><div> <B>13 < SA/D < 15</B></div> </tD> </tR> </TABLE></div> <div> <B>Formula 3</B></div> <bR> <div> <B>This ratio may go to as low as 10. I maintain the criteria that boats with an SA/D ratio under 8 should not be called motorsailers, absolutely, but motor-sail assisted-boats . Let's keep a twilight zone from 8 to 10...</B></div> <bR> <div> <B>NOTES:</B></div> <div> <B>- These formulae are still precarious and I have to do more extensive search. </B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>So take them with care</B></FONT><B>.</B></div> <div> <B>- You will not make big mistake, if you use indifferently </B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>tonnes (2204 lbs) or tons (2240 lbs)</B></FONT><B>.</B></div> <div> <B>- You will not make big mistake, either, if you take </B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>Hull Length instead of Lwl</B></FONT><B> in formula 2, and multiply obtained figure</B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B> times 0.86</B></FONT><B> to get HP, for classic style motorsailers with normal overhangs. </B></div> <div> <B>- DIN and SAE standards power measurements are not equal. SAE gives power without engine's accesories and has a greater value (Nice for sales purposes!). </B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>To convert from DIN to SAE</B></FONT><B>, you may (roughly!) multiply </B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>times 1.13</B></FONT><B>, as a mean value.</B></div> <div> <B>- To know more about differences between BHP, SHP, EHP and the like, visit this educational page of the </B><A HREF="http://www.usna.edu/NAOE/courses/en200/hornyak_slides/Ch%207/Horsepower%20&%20Hull%20Resistance.ppt#1" TARGET="_top" TITLE="http://www.usna.edu/NAOE/courses/en200/h"><U><B>USNA</B></U></A><B> (click).</B></div> <bR> <bR> <div> <B>GENERALIZATION OF FORMULA 2</B></div> <div> <B>We may generalize Formula 2, to easily estimate HP (DIN) for monohull motorsailers when displacement is not known, as the following:</B></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>General HP / Lwl formula:</B></div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="262" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 23 ><NOBR><div> <B>HP =</B><B> </B><B>K * Lwl * (Lwl - 10)</B></div> </NOBR></tD> </tR> </TABLE></div> <div> <B>for 20 < Lwl (feet) < 40  </B></div> <bR> <div> <B>being K values:</B></div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="409" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 20 ><NOBR><div> <B>Motorsailer type</B></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="71"><div> <B>Light</B></div> </tD> <tD VALIGN=TOP WIDTH="71"><div> <B>Medium</B></div> </tD> <tD VALIGN=TOP WIDTH="71"><div> <B>Heavy</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="163"><div> <B>K</B></div> </tD> <tD VALIGN=TOP WIDTH="71"><div> <B>0.06</B></div> </tD> <tD VALIGN=TOP WIDTH="71"><div> <B>0.08</B></div> </tD> <tD VALIGN=TOP WIDTH="71"><div> <B>0.1</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 ><NOBR><div> <B>D/Lwl ratio's zone:</B></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="71"><div> <B>250</B></div> </tD> <tD VALIGN=TOP WIDTH="71"><div> <B>350</B></div> </tD> <tD VALIGN=TOP WIDTH="71"><div> <B>450</B></div> </tD> </tR> </TABLE></div> <bR> <div> <B>If we know D/Lwl ratio, we may use:</B></div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="192" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="180"><div> <B>K = (D/L)/4300</B></div> </tD> </tR> </TABLE></div> <bR> <div> <B>But if we know D, its easier to use a generalization of the formula in Conclusion 1 above: </B></div> <bR> <div> <B>Formula 4</B></div> <div> imperial</div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="497" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 25 ><NOBR><div> <FONT SIZE="4" COLOR="#0000CC" FACE="Arial" ><B> </B></FONT><B>HP = </B>µ <B>* D(lbs)/1000</B></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <B>being </B><FONT SIZE="4" COLOR="#CC0000" FACE="Arial" >µ </FONT><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>among 2 and 2.5</B></FONT></div> </NOBR></tD> </tR> </TABLE></div> <bR> <div> or, in metric units (and very approximate the same in long tons)</div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="494" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 25 ><NOBR><div> <FONT SIZE="4" COLOR="#0000CC" FACE="Arial" ><B> </B></FONT><B>HP = </B>µ <B>* D(tonnes)</B></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <B>being </B><FONT SIZE="4" COLOR="#CC0000" FACE="Arial" >µ </FONT><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>among 4.5 and 5.5</B></FONT></div> </NOBR></tD> </tR> </TABLE></div> <bR> <bR> <div> Sailing boats with power given by this last formula with a  <FONT SIZE="4" COLOR="#0000CC" FACE="Arial" >µ</FONT>  <B>less than 1.5 (imperial) or 3.3 (metric), can be considered as sailing boats with auxiliary engines</B>. On the other hand I think it's <B>not necessary at all to go over 3 (imperial) or 6.6 (metric) for this parameter</B> unless for semi-planning hulls. </div> <bR> <bR> <bR> <div> <B>FORMULA 2 IN TERMS OF SA AND Lwl</B></div> <div> It is no easy to come to a simple formula expressing SA in terms of Lwl. I've been trying hard, but it comes to a too complicated one, because it depends too much on others factors. Anyhow, simplifying things, we can consider that <B>a proper motorsailer should have a sail area in square meters (or 10 times if in sqf), in the range of what I consider a proper engine's power in HP (HP/D ratio between 2 and 2.5)</B>. If we asume this, <B>we may also use the same Formula 2 generalized, to estimate the Sail Area given the Lwl. </B></div> <bR> <div> So, we can finally state the following:</div> <bR> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>HP &  SA  estimative formula (Imperial units):</B></div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="310" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 23 ><NOBR><div> <B>HP = SA/10 = K * Lwl * (Lwl - 10)</B></div> </NOBR></tD> </tR> </TABLE></div> <bR> <div> <B>for Lwl between 20 and 40 feet  ,  being K as before</B></div> <bR> <bR> <bR> <div> <B>MOTORSAILERS' DEFINITIONS (MONOHULLS)</B></div> <bR> <div> Here you have my actual thoughts and definitions on Motorsailers.</div> <bR> <div> <B>General definition:</B></div> <div> <I><B>"Motorsailers should be, in my opinion, hybrids among sailing boats and motor boats, having amplier volumes than those of a pure sailing boat, as well as a nice pilothouse conceived to steer and navigate (so not being being only a deck or raised saloon) to make them more livable in all kind of weathers; able to carry a generous cargo; have manegeable sails with a short crew (without the needing of very expensive hardware), but able to easily pull the boat as to develope hull speed under sail alone in a moderate breeze (force 4); have a propeller-engine combination allowing for a fuel efficient motoring and having power enough to at least reach hull speed under engine alone, as well as extra muscle to beat dead to winward in a Force 10 storm in protected waters".</B></I></div> <bR> <div> <B>We have two main classes, depending on the intended use:</B></div> <bR> <div> <B>Ocean going (globetrotters) motorsailers:</B></div> <div> They use to have an SA/D ratio (loaded) from 13 to 15+ and a HP/(D/1000) ratio around 2 (from now on we'll call this ratio just HP/D). D/Lwl ratio may go from 250 for lighter ones as in designs bred in sailing boats, up to 400+ for old-style heavy-weigths, bred in fishing boats. Fuel tankage should be enough, at least, for around 900-1000 miles under engine alone at 1.1  Speed/Length ratio (Imperial units). Low pilothouse profile, as to allow for structure and windows being capable of resist capsizing and green sea slamming. Relatively high wetted surface for better seamanship. CE Design Category: A</div> <bR> <div> <B>Coastal motorsailers:</B></div> <div> These tend to be lighter nowadays and with more powerful engines, although traditional heavy-weights are also here in their own. Fuel tankage is shorter, tipically allowing for 300-400 miles passages. CE Design Category: B or A  </div> <div> Two definite trends:</div> <bR> <div> <FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>Northern:</B></FONT> Boats designed to usually sail in colder climates and stronger weather. D/Lwl ratio going from 250 to 350 (oldies use to be in the 400+ region), SA/D  from 13 to 16 and,and HP/D ratio from 2 to 3 (I consider these boats as being all around short-seas motorsailers, if design category is A).</div> <bR> <div> <FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>Southern</B></FONT><B>:</B> Boats rather designed with good-weather islands hopping in mind. D/Lwl in the 200-250 range, very variable SA/D ratio, going from 12-13 up to the 17-18 range, and having an HP/D ratio definitively much higher than 3, some of them going as high as 7 (!) with totally flat sections at the sterns. Fuel hungry boats. Raised deck-saloons rather than pilothouses, in some cases integrated with the cockpit (Be careful: Extreme designs may not even comply with CE design category B!)</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> Note: Ratios always considered for loaded condition</div> <bR> <div> All contributions on these matters are most welcome and appreciated. </div> <bR> <div> Write to:<FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B> </B></FONT><B>g.gefaell</B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B><at></B></FONT><B>mundo-r.com    </B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B>(Substitute <at> with @ )</B></FONT></div> <bR> <bR> <bR> <div> <B> <A NAME="gathering_info"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B><FONT SIZE="4" COLOR="#0000CC" FACE="Arial" ><B>SEND YOUR MOTORSAILER DATA!</B></FONT></div> <div> <B>You may send your (Or known to you) motorsailer's data using the form down here.</B></div> <div> <B>Please send also images. Thanks a lot in advance!</B></div> <bR> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="868" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 768 WIDTH="431"><div> <B>GATHERING INFO ON MOTORSAILERS</B></div> <div> <B>Please use metric units if possible</B></div> <div> (but you may use imperial too)</div> <div>  <form method="post" enctype="multipart/form-data" action="http://pub27.bravenet.com/emailfwd/senddata.php"> <input type="hidden" name="usernum" value="2262941878"> <input type="hidden" name="cpv" value="2">  <table border="0" cellpadding="0" cellspacing="0" align="center"> <tr> <td><h3 style="border-bottom:1px solid black;">Sailboat Data Form</h3></td> </tr> <tr> <td> <label for="Yourname" style="display:block;margin-bottom:5px;">Your name</label><input type="text" name="Yourname" id="Yourname" value="" maxlength="1000" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="email" style="display:block;margin-bottom:5px;">Your e-mail address</label><input type="text" name="email" id="email" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="boatname" style="display:block;margin-bottom:5px;">Boat's name</label><input type="text" name="boatname" id="boatname" value="" maxlength="1000" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="makemodel" style="display:block;margin-bottom:5px;">Boat Make and Model</label><input type="text" name="makemodel" id="makemodel" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="hulllength" style="display:block;margin-bottom:5px;">Hull Length</label><input type="text" name="hulllength" id="hulllength" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="waterlinelength" style="display:block;margin-bottom:5px;">Waterline Length</label><input type="text" name="waterlinelength" id="waterlinelength" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="beammaximum" style="display:block;margin-bottom:5px;">Beam (Maximum)</label><input type="text" name="beammaximum" id="beammaximum" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="waterlinebeam" style="display:block;margin-bottom:5px;">Beam at waterline (best guess)</label><input type="text" name="waterlinebeam" id="waterlinebeam" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="keel" style="display:block;margin-bottom:5px;">Keel draught and type</label><input type="text" name="keel" id="keel" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="bodydraught" style="display:block;margin-bottom:5px;">Body draught amidships (best guess)</label><input type="text" name="bodydraught" id="bodydraught" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="displacement" style="display:block;margin-bottom:5px;">Displacement (specify load condition)</label><input type="text" name="displacement" id="displacement" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="ballast" style="display:block;margin-bottom:5px;">Ballast</label><input type="text" name="ballast" id="ballast" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="sailarea" style="display:block;margin-bottom:5px;">Sail Area (I,J,P,E based, or approximate)</label><input type="text" name="sailarea" id="sailarea" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="mastheight" style="display:block;margin-bottom:5px;">Height of mast over water (bridge clearance)</label><input type="text" name="mastheight" id="mastheight" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="stix" style="display:block;margin-bottom:5px;">EC Directive or IMS's STIX number (specify)</label><input type="text" name="stix" id="stix" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="hp" style="display:block;margin-bottom:5px;">Engine's continuous HP</label><input type="text" name="hp" id="hp" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="experience" style="display:block;margin-bottom:5px;">Your years of cruising/sailing experience</label><input type="text" name="experience" id="experience" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="use" style="display:block;margin-bottom:5px;">Best suited use of the boat (Oceanic, coastal, etc).</label><input type="text" name="use" id="use" value="" maxlength="100" style="width:300px;"><div style="clear:left;height:20px;"> </div> <label for="comments" style="display:block;margin-bottom:5px;">Comments</label><textarea name="comments" id="comments" style="width:300px;height:100px;"></textarea><div style="clear:left;height:20px;"> </div> </td> <tr> <td align="right">  <input type="submit" value=" Submit "> <input type="reset" value=" Reset "> </td> </tr> </table> </form>  </div> <bR> <div> <B>A JPG photo of your boat sent by e-mail, as well as an stability curve, if available, will be greatly appreciated.</B></div> <bR> <div> <B>Please add your comments on the seakindliness, seakeeping ability and seaworthiness of your boat.</B></div> <bR> <div> <B>Also the kind of cruising you consider your boat is better suited to: oceanic, offshore, inshore, protected waters, etc.</B></div> <bR> <div> You may also send me whatever additional information to:</div> <bR> <div> <B>g.gefaell</B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B><at></B></FONT><B>mundo-r</B><FONT SIZE="3" COLOR="#CC0000" FACE="Arial" ><B><dot></B></FONT><B>com</B></div> <div> <B>(Substitute <at> with @ and <dot> with "." )</B></div> <bR> <bR> <div> <B>THANKS A LOT!</B></div> <div> <B><IMG SRC="2b6c8460.png" border=0 width="200" height="70" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <bR> <bR> </tD> <tD VALIGN=TOP WIDTH="418"><bR> <bR> <bR> <bR> <div> <B>You may use this Triangle calculator, </B></div> <div> <B>to easily calculate your boat's sail area:</B></div> <bR> <div> (Clik on image to access)</div> <div> <A HREF="http://www.1728.com/trig4.htm" TARGET="_top" TITLE="http://www.1728.com/trig4.htm"><U><IMG SRC="09646cb0.gif" border=0 width="326" height="203" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></A></div> <bR> <div> Note: Forward triangle foot is not your jib's foot but the "J" measurement. As an approximation you may measure your working jib (Not the Genoa)</div> <bR> <bR> <div> <B>If you need a handy calculator </B></div> <div> <B>to figure out your boat's numbers,</B></div> <div> <B>here you have an useful one!</B></div> <bR> <div> <B>Note:</B></div> <div> Enter angles in radians.</div> <div> 1 radian = 180º/Pi = 57.25978º (aprox)</div> <div> 1º = 0.0174533 radians (aprox.)</div> <bR> <div> <FONT SIZE="3" COLOR="#0000CC" FACE="Arial" >(For a converter, try:</FONT> <A HREF="http://www.megaconverter.com/Mega2/" TARGET="_top" TITLE="http://www.megaconverter.com/Mega2/"><U><B>Megaconverter</B></U></A><B>)</B></div> <div> <B> <HEAD> <SCRIPT LANGUAGE="JavaScript">  </script> </HEAD> <BODY>