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Jack Sparrow View Drop Down
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Post Options Post Options   Quote Jack Sparrow Quote  Post ReplyReply Direct Link To This Post Topic: Demolition Derby
    Posted: 16 Apr 07 at 1:21pm
Ospery

Kick ass fast, built like a tank and as heavy as one, plus for the Brucey Bonus you are allowed 3 crew. Perfect for good old fashioned pirate techniques!

I don't think they are longer than 16ft?
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Post Options Post Options   Quote Pierre Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 1:24pm

17ft 7ins I'm afraid.......

 

 

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Post Options Post Options   Quote MainlySwimming Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 1:26pm

I think it has to be a hiking boat....you couldn't charge down another boat at anything like full speed whilst on the wire,and in any event the result is likely capsize.  Whereas a wayfarer / bosun is just going to keep on going, crew is well protected etc

We need someone with some game theory experience to get to work on this.  List the factors: crew protection, bow strength, max KE, etc....then weight them and you're off.

Enough students come on this forum asking for help on their project to design a new widget...they should try this as a project / thesis, much more interesting!

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Post Options Post Options   Quote Jack Sparrow Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 1:28pm
Dam!

I'd just calculated what 5385 mm was in feet too.

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Post Options Post Options   Quote MainlySwimming Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 1:34pm

The first draft of the rules said you were only out after sinking or injury....that leaves capsized boats as fair game.

Suggests good tactic would be sit outside the melee and just periodically charge your Bosun / Wayfare in and trash some hulls whilst they are overturned and therefore more vulnerable.

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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 1:41pm

Originally posted by JimC

Weight isn't that important for damage: it's speed that counts. Remeber KE = 1/2mv2 from school physics? Here's the kinetic energy for various boats at reasonably attainable speeds...

Class ---- Boat ---- Crew ---- Speed ---- KE
----- ---- Weight -- Weight -- ----- ---- --   
----- ---- Lbs ----- Stones -- Knots --- Joules
Bosun ---- 375 ----- 28 ------ 5 ------- 1155
Cherub --- 160 ----- 23 ------ 10 ------ 2902
Wayf'er -- 450 ----- 30 ------ 6 ------- 1885

Jim,

Good to see some figures applied but are we not looking at forces resulting from a change of momentum.

http://www.iop.org/activity/education/Teaching_Resources/Tea ching%20Advanced%20Physics/Mechanics/Momentum/page_4160.html

If we assume that the final speed after impact is zero then the force would just be  F= mv making the velocity less important.

We also have to take into account the ability of the boat to protect the crew and avoid/sustain attacks.

I'm still voting Laser 5000

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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 1:44pm
Originally posted by MainlySwimming

I think it has to be a hiking boat....you couldn't charge down another boat at anything like full speed whilst on the wire,and in any event the result is likely capsize. 

Nah - just nip in off the wire just before impact ...  or lock in to the foot loops and brace yourself ...

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Post Options Post Options   Quote m_liddell Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 1:55pm

The boss is prob a candidate, is it under 16ft?

A contender may be the laser stratos. Big and heavy with an asy pole and big enough asy to achive a good ramming speed. People may be tempted by a sport 16, Topper's giant training hulk, but anyone that has worked for sunsail will tell you the hole VERY easily.

The 5 tonner prob gets my vote as long as the rig stands up to the forces from high speed impact.

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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 2:23pm

Agreed - I think it should be like forces boxing - extra points awarded for aggression.

I don't know what ISAF have been playing at with this medal race rubbish - this would be a real winner with the media ...

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Post Options Post Options   Quote MainlySwimming Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 07 at 2:34pm

re jessie-ing...fair point.

In fact, let's make this nautical equivalent of 'milling' in the paras...make all Navy recruits sit in lasers and beat seven bells out of each other for an hour....might toughen them up a bit....

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