50 Ways to Improve Your Powerboat Driving by Dag Pike PDF

By Dag Pike

ISBN-10: 1472903315

ISBN-13: 9781472903310

This is a publication approximately useful powerboat using in boats huge and small, working at speeds among 20 and a hundred knots. it's approximately suggestions which may merely be picked up from experience—practical how you can make your riding more secure, more straightforward and higher, regardless of the conditions.

This e-book begins the place so much different books end. you've learnt the $64000 fundamentals of powerboat riding, yet now it is time to see the right way to translate those fundamentals into sensible dealing with innovations so you might use to provide a greater trip and feature a smoother passage. With the aid of this e-book, readers will decide up specialist advice such as

  • Handling a quick boat in waves and head seas
  • Matching reaction occasions to sea conditions
  • Using the throttle to impact trim

    50 how you can increase Your Powerboat Driving distils Dag Pike's event won from over 50 years of using an entire variety of craft from high-speed powerboats and lifeboats to ships. Written via the most skilled powerboat...

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    Extra resources for 50 Ways to Improve Your Powerboat Driving

    Example text

    This is the dilemma that faces powerboat designers and these days we are seeing many of them taking the easy option of having a low deadrise so that they can improve the top speed with the same engine power. A deadrise of, say, 10 degrees will be pretty efficient as far as generating lift is concerned, but you will end up with a harsher ride in waves. Remember that you will rarely operate your boat at full speed, so efficient performance may not be as important as many builders would have us believe.

    This stabilising effect is a constant balancing act that takes place automatically. The situation is more complex on a planing boat because here the hull is also supported by the lift from the planing surfaces. When upright, this lift is equally balanced on both sides, but when the boat heels there is a higher proportion of the lift on the lower side and once more the hull will come upright – assisted, of course, by the shift in the centre of buoyancy. WHEN A PLANING BOAT HEELS, THE LIFT FACTOR ON THE LOWER SIDE IS INCREASED, THUS PRODUCING AN ADDITIONAL RIGHTING FORCE IN ADDITION TO THAT GENERATED BY THE MOVEMENT OF THE CENTRE OF BOUYANCY.

    HAVING A SLIGHT ‘TOE IN’ ON THE OUTBOARDS IMPROVES EFFICIENCY. 15 FLAPS AND INTERCEPTORS FLAPS CAN BE USED TO CONTROL BOTH THE TRANSVERSE AND THE FORE AND AFT TRIM. Flaps (sometimes also called trim tabs) are the angled plates that are hinged at the bottom of the transom on each side. The flaps are normally hydraulically operated by switches or a joystick lever on the dashboard and they are used to adjust the trim of the boat. By angling the flaps downwards, they change the flow of the water under the transom and generate a lifting effect.

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    50 Ways to Improve Your Powerboat Driving by Dag Pike


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