Gamefishing Design  
         
        
        
        
           
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               Fish 
                The World 
                (Gamefishing for Sail Under Sail) 
               
                     Why you ask, would we even consider 
                such a notion as big game fishing from a sail powered vessel? 
                As we research through the gamefishing market in general, and 
                some of the more recent articles on new fishing sites, etc., we 
                notice more and more references to potential, prolific hot spots 
                in an array of international and often remote locations. 
                The equatorial upwellings of the *Pacific's Line Islands, the 
                *Charlotte Bank off Brazil, and the Great Barrier Reef of Australia 
                are a few examples which we will reference later in this paper. 
                There are many other documented sites as well as numerous unexplored 
                ones. 
                   The 
                remoteness of these sites and their probable lack of facilities 
                often preclude the use of most traditional craft. We need a vessel 
                of true self-sufficiency, with capabilities of endurance and 
                long range. The catamaran hull form has in the past 
                couple of years gained significant recognition from both 
                the power and sail industries as a truly efficient, sea-kindly 
                hull form . There are monthly, many new converts praising the 
                virtues of these multihulls. There is even a new magazine devoted 
                to power multihulls. 
                   This 
                efficiency factor under both power and sail is the key to long 
                range. The long slender hulls of a catamaran are easily driven 
                past the traditional displacement/hull-length resistance speed 
                barriers, and this vessel's design has been optimized at a fineness 
                ratio of 14 to 1 to ensure top performance. Twin diesel power 
                of 350 hp each should drive her at 25 knots. Remember this 
                is not a traditional displacement hull form, so it does not require 
                excessive h.p. to 'get on plane'. 
                   A 
                unique prop drive system contributes to this boat's efficiency. 
                The props are not inclined to the water flow, but rather are directly 
                aligned with it. This imparts an almost 100% thrust factor, and 
                we can swing larger props as we're not limited by the traditional 
                shaft inclination/length constraint. Many traditional sportsfishing 
                boats are seen to be riding bow up at approx. 7 to 10 degrees. 
                Add this angle to the shaft angles of 12 to 15 degrees, and we 
                have props digging at the water between 19 to 25 degrees off true 
                perpendicular; inefficient and prone to induce significant vibrations 
                due to the unequal top to bottom hydrodynamic loadings. And upon 
                hard backing-down, a tendency to power the stern of the vessel 
                sharply down. 
                   This 
                catamaran has its props further forward in a less vulnerable location, 
                at the best inclination, and separated in width such as to offer 
                excellent maneuverability. The propellers can be mounted either 
                to the front or the rear of the strut in a pushing or pulling 
                fashion, and the entire strut/prop mechanism can be made to retract 
                (swing up) from the water while under sail and/or for servicing 
                in remote locations. (Make reference to the Power 
                Propulsion section of this website) 
                   The 
                relatively small size of our engines, and the improved drive and 
                hull efficiencies, make for a fuel miserly vessel that 
                attempts to break the vicious circle of needing more fuel 
                to power the higher h.p. engines needed to carry more fuel. This 
                speed/fuel dilemma is discussed in an article in MARLIN, 
                Feb-Mar '93. A more recent issue of MARLIN, Jan '95, makes a "head 
                to head comparison" between a traditional 50' sportfisher, 
                "Kelsey Lee" and a 50' catamaran vessel,"Tara 
                Vana" over an identical, non-stop, 900 mile course from 
                Costa Rica to Mexico; 1800 gals of fuel verses 320 gals for the 
                cat (under power for the entire trip). And Tara Vana was able 
                to fish the entire trip, unimpeded by the extra fuel containers 
                which filled up the cockpit of Kelsey Lee. On another occasion, 
                a voyage of 3700 miles was accomplished with the consumption of 
                only 195 gals of fuel! [ The savings in fuel cost alone could 
                defray a substantial portion of the crew salaries of this vessel 
                in charter]  
                   Now 
                if we add some sails to this vessel, we truly attain an unlimited 
                range to fish the whole world on our own bottom. Lets keep 
                this rig simple for non-sailors, and lets make sure it works 
                in a fishing boat environment. 
                   I 
                looked back at an old design of mine from 25 years ago. The basis 
                of the idea was to develop a simple, efficient cruising 
                rig ,which might be handled by as few as one person. Preferably 
                this crewman did not have to leave the central cockpit area and/or 
                over-exert himself in handling the sails. The rig needed to have 
                good balance, in a variety of sail configurations which might 
                be utilized in sailing the great variety of ocean and wind conditions 
                it might encounter. Without going into details, this rig accomplished 
                all those objectives,  plus all of the sails simply roll 
                up like old style window shades around their forward support wires 
                (forestays). Very simply for non-sailors. 
                
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                      Full 
                        Sail 
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                         Trolling 
                        Sail 
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                    Gamefishing 
                under sail? A great majority of the time spent actually fishing 
                is done at trolling speeds (particularly so with the more recent 
                popularity of flyfishing and light-tackle/stand-up styles). This 
                catamaran can reach those trolling speeds under sail alone, 
                in a silent, effortless, stable manner; and without having to 
                use multiple sails. The single central sail (mainstaysail) is 
                all that's needed to reach trolling speeds, and it can be rolled 
                and stowed in 30 seconds or less, while the engines are engaged 
                for exceptional maneuvering while landing the fish for tagging. 
                I'm well aware that once a large gamefish is hooked, the vessel 
                must get rid of all sail quickly, with minimum effort, and get 
                under power. This unique vessel accomplishes that. 
                   And 
                how about the rigging of the sail plan interfering with the fishing? 
                Not much - look at perspective view. The wishbone boom swings 
                up, to stow totally out of the way while trolling. The entire 
                aft deck is clean except for the two backstays which broadly 'Y' 
                out to either transom. Two short pole outriggers can be swung 
                out from their stowed position up along side these backstays. 
                Its possible that this upside down 'V' formed by the backstays 
                could be rigged with additional trolling clip attachments. The 
                actual configuration of the fishing cockpit area may be altered 
                to suit the owner. Mr. Peter Wright, a very well known 
                name in offshore fishing around the world, has indicated that 
                he would be very pleased to help with the final configuration. 
                 
                
              Trolling 
                Configuration 
                Click for Larger View 
                   A 
                more detailed description of this unique sailing rig was featured 
                in some older issues of the magazines Yachting, Rudder, & 
                Multihulls. The more recent update, "Revisiting 
                the Mast-Aft Sailing Rig", has yet to be published. Both 
                copies are available in the archives of this website. 
                   What 
                a pleasure it is to move across the water under the silence of 
                sail and be able to hold a conversation without shouting, and/or 
                to listen to music without competing with the noise, vibration, 
                & fumes of a pair of big h.p.diesel engines. Many people to 
                whom I've talked, have emphasized this very negative aspect of 
                charterboat fishing. I would urge any game fisherman to try, at 
                least once, fishing under sail. 
                   I've 
                also heard the many claims by various captains about their individual 
                boat's particular sound being an attraction for raising fish. 
                I find it difficult to believe that a very loud (water 
                is a great amplifier and transmitter of sound), foreign sound 
                would act to attract a large predator fish seeking out their food 
                source in the ocean's natural environment. Loud, unnatural noises 
                have in most cases acted to disperse aquatic life. Tara Vana, 
                the only other professional sailing/gamefishing boat (catamaran) 
                I know of, certainly excelled in the fishing tournaments off the 
                Pacific island of Bora Bora (www.TaraVana.com). 
                   The 
                sea-kindliness of some sportfishing boats is often considered 
                secondary in the quest for speed. What many people forget about 
                a smooth ride in a heavy sea is that it is very much a function 
                of weight, in addition to hull design. The more weight a boat 
                has, and the more form resistance (fat hull,etc.) it offers to 
                moving thru the ocean, the more the sea acts to resist the boat's 
                progress thru the sea, and thus the more uncomfortable ride and 
                we must slow down. A big headsea is a particular challenge 
                (the weak link you might say). Heavy boats carry their momentum 
                into each trough and crest in a battle with the sea, while relatively 
                lt-weight boats with slender hulls slice through with less battering. 
                "You can out-think the ocean, but you can't out-slug the 
                ocean," quoting a sign posted at the U.S. Naval Academy. 
                   In 
                a beam or quartering sea, the monohull experiences a rhythmic 
                rolling motion as it must first roll over in order to develop 
                an anti-rolling force to roll back. Dampening of this motion is 
                very slight, and the rolling is further exacerbated by a taller 
                and/or heavier fishing tower. The catamaran has a much greater 
                athwartship stability and roll dampening qualities; (and the sail 
                acts to further dampen this roll, akin to the use of a steadying 
                sail on an ocean trawler). Following seas tend to pick up broad 
                sterns and slew the vessel off to either side of a straight course. 
                Obviously, the catamaran form does not have these broad buoyant 
                sterns. 
              Storm 
                survivability should be a consideration for any vessel making 
                offshore passages, and its generally acknowledged, that 
                this is best accomplished by facing into a truly strong storm 
                (a big headsea). As mechanical things go, its not hard 
                to imagine some lost of significant power at a most inopportune 
                time during an extended storm. This could put the solely powered 
                vessel in a perilous position in short order. The sail/ powered 
                vessel of this proposal would only need to partially unfurl the 
                rear (mizzen) sail, and the vessel will point up into the wind 
                just like a weather vane on top of a barn. Add a sea anchor to 
                this boat's inventory, and I would ride out a hurricane in this 
                vessel. 
                   Enough 
                of this sea stuff, lets look at the fun part. What a great 
                boat to entertain family, friends, business associates, charter 
                groups, etc. on, whether fishing or not. The catamaran offers 
                immense areas in the cockpit, in the saloon/ galley, on the front 
                tramp for relaxing, sunning, fishing, dining, socializing. The 
                main saloon was divided into two large 'U'-shaped, galley and 
                dinette/seating areas, and without partitions between them. This 
                provides a spacious openness, 
                with a panoramic view out the deckhouse windows. Including 
                the galley in this social area is analogous to the situation at 
                most land based home parties; the kitchen invariable becomes a 
                center of the party. These areas could be opened up further, however 
                at sea, I've found that one does not want too open an area, with 
                limited things to hold onto and/or brace against. The nav 
                station is conveniently located just inside the deckhouse 
                entrance, and communicatively close to a major helm station. It 
                also provides another seat in the social saloon. 
                
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                     Just outback, the aft deck (the 
                'porch') becomes an extension of the main saloon with attendant 
                seating and stowable dining table. This area could be modified 
                to include twin fishing chairs at the two corners of the 
                inboard transom. The fishing participants and spectators can co-mingle 
                in a cockpit this size. Where the original design called for an 
                awning to be deployed from the deckhouse roof to shade the cockpit 
                seating, the newer version provides a hardtop extension to the 
                deckhouse roof which covers this seating, and could deploy curtains 
                to enclose this area in inclement weather or low sun angles. The 
                skipper can now set or stand on the aft portion of this hardtop 
                for an excellent view while backing down on a fish. The transom 
                doors have been modified to not foul lines, and bait wells are 
                incorporated in the transom extensions. Artificial tackle is stowed 
                in lockers in the back undersides of the cockpit seating. The 
                port helm station has been eliminated in favor of an upper, portable 
                station atop the deckhouse roof at the base of the mast (great 
                visibility for docking).A short climb up some folding steps puts 
                you in the crow's nest (what fun & what a view). The 
                sailing winches have been repositioned so as to provide additional 
                seating or a large cushioned area over the large access openings 
                for engine maintenance or replacement. Considerable effort has 
                been made to provide accessible sized engine rooms, which contain 
                most of the mechanicals, and are isolated from the living areas 
                by a major bulkhead of the vessel. Many of these modifications 
                are detailed in drawings under development and are available upon 
                request from the author/designer. 
                   What 
                other 60/65' could provide 4 
                private dbl staterooms to the exclusion of any saloon 
                conversion and two separate crew's quarters. Wow! The layout arrangement 
                can be modified to fit an individual owner's requirements, but 
                the basic premise was to locate all of the living areas (excluding 
                crew) between the two major watertight bulkheads fore & aft. 
                Versatility might dictate that the two most forward of these dbl. 
                strms. be configured as two singles with removable inserts which 
                convert them to doubles; or one might be converted to a very large 
                owners bath. 
                   There's 
                one other aspect of a cat that really adds to their fun. They 
                have shallow 
                draft! You can go exploring, many times right up 
                to the shore. You can go where other boats only dream of; mangroves, 
                rivers, coves. You can even beach the bows. You can fish the flats 
                and reefs from the Bahamas to the Pacific atolls. 
                   This 
                is a specialized vessel, which should appeal to that truly adventurous 
                sportsman who desires to fish something other than organized tournaments, 
                or that gentleman who desires to own a 'porsche of the seas'. 
                 
               
                BRIAN EILAND 
                RunningTideYachts, Ltd 
                runningtideyachts@gmail.com 
                   P.S. 
                A sportsfishing vessel could also be operated as a fisheries research 
                vessel. There are a number of colleges/universities (consortium) 
                which could make shared use of such a vessel while the owner(s) 
                co-benefit with usage time and tax considerations. Visit our Owner/Charter 
                Options section. 
              **Lest 
                it be overlooked, this vessel's mission need not just be fishing. 
                That may just be an ancillary feature of this very versatile 
                world explorer. What a great Motor/sailer! 
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    |        Excerpts from a Sea Trial Article 
        by Professional Capt. Rick Gaffney  
       
      "Trolling under power, sail, or a combination of both, Tara Vana easily 
      fishes a spread of four lines and two teasers with another two light-tackle 
      outfits rigged with natural baits.....With additional 10-ft outriggers she 
      offers a huge lure spread."  
       
      "Under power alone Tara Vana has a respectable 1200-mile range, but 
      thanks to her sail inventory and practical design she has virtually unlimited 
      range."  
       
      "Tara Vana was designed to sail at nearly wind speed, and trolls very 
      efficiently under sail alone..."  
       
      The designer " was asked to grapple with some of the unique requirements 
      of a good sportfishing machine--the ability to back up quickly and maneuver 
      with agility--then mesh them with a hull design that would not only perform 
      well under sail, but also under power alone. The results are probably as 
      close as anyone could come to the perfect compromise."  
       
      "She converts into a highly maneuverable powerboat in about as much 
      time as it takes to drop a bait back and hook a billfish in her teasers, 
      and once under diesel power, her widely separated, fully reversible props 
      allow her to pursue even the most agile billfish with impressive agility." 
       
      "She backs down at over 10 knots without burying her two transom doors." 
       
      "Modern roller-furling sails roll up automatically like old-time window 
      shades, ready for deployment at the pull of a line."  
       
      "Tara Vana features four staterooms, each with a queen-sized berth; 
      and the main salon alone encompasses more space than virtually the entire 
      interior of the" identical-size conventional vessel.  
       
      "What self-respecting powerboater would be caught dead on a sailboat? 
      Well, a practical self-respecting powerboater, for one! Someone who wants 
      to get to a fishing area reasonably fast, in spacious, stable comfort, with 
      minimum fuel consumption, then live aboard comfortably in places lacking 
      creature comforts and readily available fuel supplies, and fish effectively 
      in virtually any sea state."  
       
      Rick Gaffney: A saltwater fly-rod world record holder, Capt. Gaffney 
      has pursued big-game fish as an angler, charter boat captain, and photojournalist 
      for well over 30 years. 
       
       
      Tara Vana: A custom-designed 50 ft gamefishing/sailing catamaran 
      operating out of the Pacific island of Bora Bora. 
       
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