ROUND BILGE and DEEP VEE

[abdo]

hello every one . is there any one have papaer or document about comparaison between deep vee hull and Round bilge is seakeeping . in english please .

[gonzo]

You have other posts with the same question. Seakeeping is the behavior of a vessel under certain weather conditions. It depends on many variables and on the SOR. For example, on a search and rescue vessel it would be the ability to self-right after a knockdown or rollover. A motoryacht is designed to be comfortable. Depending on the SOR, expectations are very different. You have to decide what the intended use will be.

[cyclops2]

Gonzo

Send him to the company that still makes the " Moppie " hull design.

Bingo. Bertrum. Old brain.

[Eric Sponberg]

Originally Posted by abdo

hello every one . is there any one have papaer or document about comparaison between deep vee hull and Round bilge is seakeeping . in english please .

There is probably more written about seakeeping of hard chine planing hulls than round bottoms. Three papers and/or articles that I am familiar with are:

"Some Considerations in Power Cruiser Design," by George E. Meese, published by SNAME, Spring Meeting, Lake Buena Vista, FL, 2-4 April, 1973.

"Seakeeping considerations in design and operation of hard chine planing hulls," by Daniel Savitsky and Joseph G. Koelbel, presented as part of a training course to the US Navy, Combatant Craft Division in May 1978. It was published in The Naval Architect, journal of the Royal Institution of Naval Architects in the UK, March, 1979.

This second reference was further developed by SNAME in Technical and Research Report #R-42, "Seakeeping of Hard Chine Planing Hulls," by Savitsky and Koelbel, November 1992.

Don't forget the book "High Speed Small Craft" by Peter DuCane, first published in 1951, fourth edtiion 1974, by David & Charles (Holdings) Ltd. in the UK. It discusses mostly hard chine planing hull forms, although early on gives some insights into round bottom hull forms.

If you understand the discussions of hard chine planing hulls, you'll gain some insight into other types of hull forms. The SNAME and RINA articles you may be able to buy direct from those organizations. The DuCane book comes available from time to time at specialty reprint stores, such as DN Goodchild or J. Tuttle Maritime Books.

I hope that helps.

Eric

[cyclops2]

Peter Du Cane is my hero.

[PAR]

"Naval Architecture of Planning Hulls" by Lindsay Lord might help.

[troy2000]

Was the OP talking about planing hulls? I don't generally think of either round-bilged or deep-vee hulls in that category....

[abdo]

Thank you MR Eric Sponberg . i think your documents very useful for me and you understant what i want but i tried to download them from internet . i can not . do you have some direct links ?

[abdo]

or please can you send me by email
ABDERABI17@YAHOO.FR

[gonzo]

Amazon.com they should have all or most of the books.

[Eric Sponberg]

Originally Posted by abdo

Thank you MR Eric Sponberg . i think your documents very useful for me and you understant what i want but i tried to download them from internet . i can not . do you have some direct links ?

For the SNAME T&R Bulletin, R-42, try this:
http://www.sname.org/libraries/viewd...1-e014786bc385

It is not free, you will have to pay for it. It is US$20 if you are a member or a student, and US$40 if you are not. You can use a credit card.

The SNAME and RINA articles are attached, scanned versions.

Eric

[abdo]

Thank you very much MR Eric Sponberg the first paper is exactly what i want. thanks again