Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Design > Boat Design
optimum bow angle optimum bow angle
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 08-11-2011, 06:06 AM
river runner river runner is offline
baker
  
Join Date: Jul 2011
Rep: 91 Posts: 171
Location: Colorado
optimum bow angle
In an article, by a guy that designs canoes and seakayaks, it said that the Navy had determined the optimum angle (from verticle) for the bow and that all their ships were close to this angle. 17 degrees rings a bell with me. Anyone know about this?
Reply With Quote
  #2  
Old 08-11-2011, 12:27 PM
tom28571 tom28571 is offline
Senior Member
  
Join Date: Dec 2001
Rep: 1500 Posts: 1,681
Location: Oriental, NC
I have a hard time believing that any one angle is optimum for all boats. Too many other variables that would impact it for a single angle to be best.
__________________
Tom Lathrop
Reply With Quote
  #3  
Old 08-11-2011, 12:27 PM
Stumble Stumble is offline
Senior Member
  
Join Date: Oct 2008
Rep: 599 Posts: 1,086
Location: New Orleans
Optimum angle for what? Wave piercing is very different than cargo, or sailing, or... There is no optimum anything for all boats.
__________________
********************
Nothing is half so much fun as screwing around with boats, except screwing around in a boat.
Reply With Quote
  #4  
Old 08-11-2011, 01:21 PM
river runner river runner is offline
baker
  
Join Date: Jul 2011
Rep: 91 Posts: 171
Location: Colorado
Since wars go on no matter what the weather, I think it was for performance in stormy seas. If you look at navy ships, it does seem like all their bows look about the same. I'm not sure what to think of this. I guess you'd have to ask the Navy.
Reply With Quote
  #5  
Old 08-11-2011, 03:25 PM
PAR's Avatar
PAR PAR is offline
Yacht Designer & Builder
  
Join Date: Nov 2003
Rep: 3125 Posts: 9,398
Location: Eustis, FL
The bow angle developed by the US Navy was for surface ships that preformed within a very specific envelope. This will be in the 25 to 30 knot range and the bow angle is just a very small portion of the "discoveries" they made in regard to WL Entries.
Reply With Quote
  #6  
Old 08-12-2011, 06:51 AM
tom28571 tom28571 is offline
Senior Member
  
Join Date: Dec 2001
Rep: 1500 Posts: 1,681
Location: Oriental, NC
Looking at the much more raked bows of Russian ships and some other Navies, there seems to be basic disagreement on ships with similar performance envelopes.
__________________
Tom Lathrop
Reply With Quote
  #7  
Old 08-12-2011, 03:37 PM
PAR's Avatar
PAR PAR is offline
Yacht Designer & Builder
  
Join Date: Nov 2003
Rep: 3125 Posts: 9,398
Location: Eustis, FL
I suspect most of the Russian navy, also have bows designed to bash it's way through thin ice and obnoxious tree hugger boats, that happen in their path.
Reply With Quote
  #8  
Old 08-12-2011, 07:41 PM
tom28571 tom28571 is offline
Senior Member
  
Join Date: Dec 2001
Rep: 1500 Posts: 1,681
Location: Oriental, NC
Quote:
Originally Posted by PAR View Post
I suspect most of the Russian navy, also have bows designed to bash it's way through thin ice and obnoxious tree hugger boats, that happen in their path.
Great guess, even if it turns out to be wrong!
__________________
Tom Lathrop
Reply With Quote
  #9  
Old 08-12-2011, 11:48 PM
PAR's Avatar
PAR PAR is offline
Yacht Designer & Builder
  
Join Date: Nov 2003
Rep: 3125 Posts: 9,398
Location: Eustis, FL
Okay, you had a problem with the tree hugger comment?
Reply With Quote
  #10  
Old 08-13-2011, 08:14 AM
tom28571 tom28571 is offline
Senior Member
  
Join Date: Dec 2001
Rep: 1500 Posts: 1,681
Location: Oriental, NC
Quote:
Originally Posted by PAR View Post
Okay, you had a problem with the tree hugger comment?
That must've been it. Chuckle, chuckle. Anyway, I liked the sharply swept bows on the Russian ships.
__________________
Tom Lathrop
Reply With Quote
  #11  
Old 08-13-2011, 09:00 AM
Alik's Avatar
Alik Alik is offline
Senior Member
  
Join Date: Jul 2003
Rep: 1070 Posts: 2,036
Location: Thailand
Russian Navy bow? Maybe for this application:
http://www.youtube.com/watch?v=SME4w037FgA
http://www.youtube.com/watch?v=N4jQh...eature=related
Note they lowered the anchor to maximize the damage; I believe this is something from sailing ship tactics.

I remember that day clearly I studied at school just where this accident happened.
Reply With Quote
Reply


« Air-boat construction plans | Boat Design | 16 ft foam catamaran »

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode


Similar Threads
Thread Thread Starter Forum Replies Last Post
how to calculate bow-stern static floating angle? nzdesign Boat Design 2 12-22-2008 08:16 AM
Sportfisher bow angle Lutjanis Boat Design 4 01-20-2008 03:09 PM
Optimum Scow bow angle? MarkIFC Boat Design 2 11-14-2007 06:38 PM
Optimum Forestay Angle PI Design Sailboats 3 11-08-2006 08:54 AM
Optimum heel angle Blether Sailboats 9 06-09-2004 06:46 AM


All times are GMT -5. The time now is 01:44 AM.

Terms of Use - Legal Contact Us Boat Design Net Forums Gallery Directory Books Powerboat Ads Sailboat Ads Top

Powered by: vBulletin Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2012 Boat Design Net