New Posts New Posts RSS Feed: 6ft Skiff
  FAQ FAQ  Forum Search   Register Register  Login Login

6ft Skiff
 Post Reply Post Reply Page  <1 56789 16>
Author
  Share Topic Share Topic  Topic Search Topic Search  Topic Options Topic Options
Isis View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 01 Sep 05
Online Status: Offline
Posts: 2753 		Post Options Post Options   Quote Isis Quote  Post ReplyReply Direct Link To This Post Topic: 6ft Skiff
    Posted: 15 Mar 06 at 10:18pm
see my post on the previous page for the fully submerged moth... bear in mind though it was either never built or was a failure so there are big flaws in the concept

Edited by Isis
Back to Top
JimC View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 15 Mar 06 at 11:28pm
Images... Not a Six footer but an Eight footer.

Dominated the class in the 90s - 1890s that is. Helm Miss Irene Pritchard

Back to Top
Blobby View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 07 May 04
Location: Australia
Online Status: Offline
Posts: 779 		Post Options Post Options   Quote Blobby Quote  Post ReplyReply Direct Link To This Post Posted: 16 Mar 06 at 12:15am

The problem with a torpedo design is that there is no margin of error on bouyancy.  Either you have too much bouyancy and it floats to the top or too little and you sink completely.

OK - you could have water ballast to adjust it but lets say you adjust it to start with and then go on the water and all your ropes get wet as do you - suddenly you weigh 0.5kg more - oops too much and you're sinking again...

Totally unworkable in my opinion.
Back to Top
andy_cherub View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 16 Mar 05
Location: United Kingdom
Online Status: Offline
Posts: 768 		Post Options Post Options   Quote andy_cherub Quote  Post ReplyReply Direct Link To This Post Posted: 16 Mar 06 at 3:07pm
My guess is that if a 33cm moth can float one person - then a lil bigger and carefull hydro stats calculations - den u can make a sleek 6footer!
-12ft skiff, Team 'CST Composites'
-Many thanks goes out to all of my sponsors.
Ignore my user name, my views are of a 12ft skiff
Back to Top
tickel View Drop Down
Far too distracted from work
Far too distracted from work
Avatar

Joined: 21 Dec 05
Location: United Kingdom
Online Status: Offline
Posts: 408 		Post Options Post Options   Quote tickel Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 06 at 12:07am
O.K., .......forget the torpedo.
tickel
Back to Top
Blobby View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 07 May 04
Location: Australia
Online Status: Offline
Posts: 779 		Post Options Post Options   Quote Blobby Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 06 at 12:37am

Originally posted by andy_cherub

My guess is that if a 33cm moth can float one person - then a lil bigger and carefull hydro stats calculations - den u can make a sleek 6footer!

Moth = 11ft long, 1ft wide, 6" draft.

So, the boat is half as long and twice as heavy, roughly speaking, that is going to be twice as wide and twice as deep to get the volume you need...so 2ft wide and 1 ft deep.

or 4 times as wide and same depth = 4 ft x 6" deep

or 4 times as deep for the same width. = 1ft x 2 ft deep

Sleek isn't really an adjective I would use...
Back to Top
andy_cherub View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 16 Mar 05
Location: United Kingdom
Online Status: Offline
Posts: 768 		Post Options Post Options   Quote andy_cherub Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 06 at 9:33am
Arrr, ill wittle one up at uni - Stu mate, ours will RULE!!
-12ft skiff, Team 'CST Composites'
-Many thanks goes out to all of my sponsors.
Ignore my user name, my views are of a 12ft skiff
Back to Top
Black no sugar View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 04 Dec 04
Location: Somewhere between Brighton and Lancing
Online Status: Offline
Posts: 3941 		Post Options Post Options   Quote Black no sugar Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 06 at 9:55am
Listen to Blobby, andy_cherub... He must be right, he's an engineer!
Lancing SC
Back to Top
andy_cherub View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 16 Mar 05
Location: United Kingdom
Online Status: Offline
Posts: 768 		Post Options Post Options   Quote andy_cherub Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 06 at 10:02am

Im a Marine Engineer - well a uni student so he may well know more than me, least I got hull form programs to design the boat & find out the Hydro stats. So ill be able to design it sleek and bouyant  

& as he said, 4ft wide 6" deep - so if its 3ft wide, with say 2ft free board & racks - made uber light - it may just work, and wont be so much like a barge / oppie thing!
-12ft skiff, Team 'CST Composites'
-Many thanks goes out to all of my sponsors.
Ignore my user name, my views are of a 12ft skiff
Back to Top
Bruce Starbuck View Drop Down
Posting king
Posting king
Avatar

Joined: 14 Sep 04
Location: United Kingdom
Online Status: Offline
Posts: 124 		Post Options Post Options   Quote Bruce Starbuck Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 06 at 10:23am
It would have to have adjustable hydroplanes to constantly correct the buoyancy.
Back to Top
 Post Reply Post Reply Page  <1 56789 16>

Forum Jump Forum Permissions View Drop Down

Bulletin Board Software by Web Wiz Forums® version 9.665y
Copyright ©2001-2010 Web Wiz
Change your personal settings, or read our privacy policy