From this page you can search the details of over 100,000 boats registered on the Inland Waterways of England and Wales. I don't know if this is the reason or not. Combos, Fishing Tools & Blocks, Marine Most modern mechanical steering system use a no-feedback mechanism as well. The trim tab on the motor most certainly CAN have a big effect in reducing list, but only on motors mounted low enough that the trim tab is in the flow of water while the boat is at cruising speed. There could be a much simpler and easy to fix solution. But in the ideal, when a hull is running on plane at optimum attitude, the most efficient setting of the engine trim should be with the propeller shaft level. I am primarily interested in correcting the list while planing and what effect the choice of propeller has on said list. The opposite reaction being the motor wants to rotate opposite the direction of the driven prop., causing hull list to port. Parts, Sacrificial Anodes & The first two are effects which cause the boat to lean or list to one side. Deals, Paint & Maintenance Contact Address. & In the real world, the prop. Distribution, ProMariner ProNautic Guide, Boat On my deep V boats something as minor as a wind speed or direction change would affect trim. I guess that is a topic for another thread......or a book.....or a library of books.LOL. But, whatever causes the trim tab requirement is small. I am interested to hear comments on that topic. At least for a novice like me, it is very educational. Furniture, Boat Seat Pedestals & It say's that the boat listed and sank. Powered by: Ultimate Bulletin Board, Freeware Version 2000Purchase our Licensed Version- which adds many more features! favorite this post Nov 24 33ft Larson Cabrio The engine/drive would then be trimmed out for peak performance. The boat has hydraulic steering so the steering torque generated by the motors cannot turn the steering wheel, but it required much great effort to turn the steering wheel to starboard than to port, especially during WOT test runs with the motor trimmed out. I don't know if the tendency for a propeller to produce a sideways force is affected by the number of blades, the size of the blades, or the shape of the blades. Plumbing, Anchor Varnish, Marine Adhesives, Deals, Dealer France Cannes Le Port et l'Hotel de Ville Harbour Boats Town Hall Postcard. Can make it worse and most here are violently opposed to hydrofoils. blade as it "digs" into the water (like an auger digging a hole)? Racks, Fish Finders, Sounders Tops, Other Kits, Boat Trailer Products, Carbon Monoxide & Bilge Pumps, Shop leaves the water, the more force is applied by the prop. Platforms, Slide This is very common with small recreation outboard powered boats. Also, shouldn't basic physics apply when discussing the prop. Maybe this is neglible on prop. --- Jerry/Idaho. Utter nonsense. If I had done that on my Montauk I would have ended up on the river bank. Bullet Skimmer, Paint and Dollies, SportsStuff Great Big are balanced, then why the need for a steering trim tab on the motor? Covers, Other For a better experience, please enable JavaScript in your browser before proceeding. I have my E-tec 90 on a jack plate, but this discussion has started to make me wonder if it is causing problems I never considered before. While all horizontal and vertical forces are balanced - and combine to produce a moment about the CG of the boat - there is one very small unbalance that I would think would be insignificant. Marine Battery Chargers, Shop Most sailors were right handed, so the steering oar was placed over or through the right side of the stern. Biminis, View Maybe I'm way off base and if so I apologize. I will move forward with plans to store fishing weights in the starboard section of the bow locker and try always to have heavier gear and passengers on the starboard side. Since only a small trim tab can be sued anyway, I suggest the motor be raised on the transom as high as it can practically go. While Sean may not feel any feedback, that does not mean his motor is not exerting force on the steering system and that that force could not be counteracted by a trim tab, it probably could. Thanks. What they are trying to tell you is that prop torque, steering torque and list is greatly affected by the P-factor where the blades of the propeller are unevenly loaded by the axis of rotation being nonparallel with the flow of water about it. Lighting, Marine Teak I do not like having to always us the port trim tab (in following seas) to correct the list and am wondering about changing the following: PropellerCurrently I am using a Mercury Enertia 16 which has a larger diameter, larger blade area, and higher rake (blade swept further aft) than most props. If you remove the steering tab or reduce it's effectiveness, it seems to me this force has to go some other place, i.e., hull list to port. Accessories, Boat The steering feedback is not much of an issue with hydraulic steering. This will, by itself, greatly reduce the list to port but it will also reduce or negate any benefit of adding a trim tab as the tab will be mostly out of the water at speed. Hitches, & See that the engine is at the exact center of the transom and is setting level. Parts, Rule 1500 GPH Automatic Our sailboat was in a slip located such that the exit from the marina was to Starboard. It would not seem to have much effect on the vertical plane, rotational forces about the CG you are describing. And I would love to see how high the motor could be mounted on an Outrage 18 without ventilation problems. Marble, Engine Caulking, Marine Engine The most efficient setting of the engine trim is the setting where the greatest efficiency (however you choose to measure that) is produced. If those bolts were removed - the engine would flip off the boat. Tackle Boxes, Fishing Bait & I ordered a new one from Yamaha for my F115, and it was curved, not straight like the original one. Modern outboards have built-in features in the lower units to compensate for torque. Deals, Electronics The motors are trimmed out at that point a fair amount. When backing out of the slip the boat always backed to Port, so the bow was heading in the right direction to head out of the channel. It sure seems to me your motor may need some steering trim tab. While I'd like everyone who believes in the power of prayer to pray for the survivors as well as the surviving family members of those who are missing. The list effect will be minimized as the engine is raised - and enhnced as the engine is lowered - as the distance between the prop and the CG is decreased or increased. Deals, Boat Seats Handles, Life Jackets & The perfect thing about trim tabs is that you can make minute changes as conditions change instantly with little effort. In nautical terms, the word “list” refers to a lean that occurs when a boat is out of balance. Sorry IC. Any ideas what would cause my boat to lean to the port side during acceleration? Some are not and we were given permission to use. Can we have a more thorough explanation or a pointer to one? Using the trim tabs has always worked very well for me. forces that will be imparted to the boat if not offset somehow. All that was necessary to back to Port was to apply some reverse thrust and let the boat slowly back out and crab to Port. --steering torque: the tendency for an outboard engine to be more difficult to rotate in one direction than the other. 25 years old, verify you don't have any hull deformation, only takes a little bit to make a big difference in planing attitude. Buy and sell locally. I would think this could now be set straight, and the curve would automatically adjust for the steering torque. Boat Slip for rent, Port Salerno $13 (Port Salerno) pic hide this posting restore restore this posting. Charts & In Sean's case, he does so that's the obvious solution right there and is also the highest and best use of trim tabs on Whalers. Anchor Box Anchors, Fishing Rod & Reel The first two are effects which cause the boat to lean or list to one side. Savers, Boat Trailer Guides & And a bit further, the list generated (albeit small), via the prop changes the buoyant forces acting on the boat - which will cause the boat to drift a bit to port or starboard - which is dependent on the hull design. Detectors, Binoculars & Tops, Bimini Top It seems logical to me, but maybe I'm missing something. Drink Holders. And while the upward, downward, left and right loads are balanced, they all contribute to the moment about the CG of the boat - in the same rotation as the prop. Boat Repair, Boat Paint & Professionals, Boat Topics and Questions (not engine topics). High Back Reclining Helm Seat, Cabin and The engine/drive should be trimmed in for best start-up acceleration and shortest time to plane. My issue is that my boat list (leans) to PORT while docked. Port Townsend, Washington Asking $26,500. Grills, Boat Drink Seats, Pontoon Boat Seats & Port Carling Boats. Pumps, Livewell Aerator Pumps Maybe this force is generated by the leading edge of the prop. I don't know what your experience level is, and I don't mean to insult you, I'm really new at boating and was making this mistake so I thought I'd throw it out there... you could be over-trimmed. Even though the non-axial thrust components are balanced, they produce a moment about the CG of the boat, which tends to rotate/list the boat - and is discussed further below. The result is a propeller tends to walk sideways in the direction that the upper blade tends to progress toward on its downward stroke. I understand your point about the top-most blade not affecting the CG about the boat's axis, but I was trying to make the point that as the motor is raised farther and the prop. Most likely it is the result of any of several irregularities in the hull, the steering hook-up or the engine mounting. Like the trim tab setting, it seems this force could also cause some list to port if the motor trim wasn't set to optimum, "no steering torque" position. Its approximately 2-3 inches lower in the water on PORT vs STARBOARD. Maintenance, Fiberglass & Epoxy Fishing Lures, Fishing Rod Holders & All, Anchor & Smoke As to Sean's Outrage 18 with its 150 HP outboard, I note that my Outrage 18 with its 150 outboard always tended to list to port and it bugged me. On a four bladed prop, the blades are diametricaly opposed. On my boat, a 22-footer with Whaler Drive, I find that moving one crew from outboard to centerline or vice versa will usually compensate for any lean. $5.00 + $2.27 shipping . Biminis, RV & Trailer Covers, Boat Cover If you are trying to boat across a lake to your summer cabin with your wife aboard on a windy day, you may choose the tuck the motor in substantially to achieve a smoother ride in the chop. Regarding a blade breaking the surface. This is very important because there were many of those who went down with the ship and … GPS Chartplotter and Fish Finder Combo, Find One thing Sean does not tell us is exactly where the motor is set on the transom. The boat lists strongly to port when I am solo and still lists noticeably to port with passenger on Starboard side. I believe this offset in the propeller shaft to Port was to create some thrust to the right or Starboard, so that under power and going forward the boat would tend to motor in a straight line. Trolling Motors, Shop Distribution of the weight in the boat affects static trim. Hardware, Boat Seat Note: The details of individual boats have been taken from files kindly supplied by the navigation authorities so will reflect their records. Browse photos and search by condition, price, and more. I added a set of trim tabs to correct listing while on plane, but when the boats stationary its a matter of balancing the load. Accessories, Pontoon Bimini The rotation of the propeller creates forward thrust, but there is also a small sideways component created. Video, GPS Chartplotters & 42.5' Sabre 425 Montego Bay Jamaica Asking $89,900. The problem for Sean is that he needs the smaller set-back trim tab for propeller blade clearance and that reduces the amount of force the trim tab can exert to help correct the list. (It would be nice to have a strong explanation of this effect. On the other hand, you may lose some top speed depending on the 4 blade prop selected. If so, it seems this force can cause listing if not properly offset by the steering trim tab. Biminis, Paint and favorite this post Nov 24 2004 Angler 18 ft center console $12,900 (Jensen beach) pic hide this posting restore restore this posting. This is worse for me since I don't have hydraulic or NFB steering. Helm Seats, Shop Anyhow, very interesting discussions. Thank you. My kicker was to port for the same reason and that was part of the problem but not all of it. Galley, Barbeque Tips to Alleviate Lean, List and Heel. One other thought about raising the motor and the effect on list forces: As the motor moves up and the prop. Contact vivaboats.com at [email protected] boats… Thanks. Though your boat speed may go down, it is still a MUCH more efficient way to start a vacation as you will arrive without your wife being pissed at you. Hardware, Marine JavaScript is disabled. with a Mercruiser Alpha one second gen outdrive.
2020 boat listing to port