Menu

Underwater sails?

Search this Thread

Prev

Previous Post

Next Post

Next

#4

Report Post

Brian Whatcott

Posts: n/a

Default

Underwater sails?

On 05 May 2004 12:33:50 GMT, ospam (Stephen Baker)
wrote:

Parallax asks:

Why not underwater sails?

Because the size of the "keel" would be about the size of a normal sail, and
would have much the same effect. You already have one, in other words... ;-)

Steve

More on this theme:

where a sail boat reacts the force from an airfoil against a waterfoil
for traction,
to react the force from a waterfoil against an airfoil would call for
a rather huge sail, because the speed potential from most water
currents is less than 5 knots and to provide considerable resistance
by an airfoil to a 5 knot movement calls for area - lotsa area.

And if an adverse wind springs up, you still need to strike sail.

Brian W

Reply With Quote

Reply With Quote

Thread Tools	Search this Thread
Show Printable Version	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Posting Rules
Smilies are On [IMG] code is Off HTML code is Off Trackbacks are On Pingbacks are On Refbacks are On

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Rotary Sails	Gary Warner	General	2	May 6th 04 02:30 AM
Help with mast, sails, O/B size	Geoff P	Boat Building	3	April 16th 04 07:38 PM
HELP! Need suggestions on making mast & sails	sandy	Boat Building	10	February 8th 04 04:24 PM
sprit sails	William R. Watt	Boat Building	0	November 29th 03 10:06 PM

All times are GMT +1. The time now is 08:45 PM.

About Us

"It's about Boats"

Contact Us BoatBanter Home Privacy Statement

Copyright © 2017