Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site cybvax0.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!harvard!think!mit-eddie!cybvax0!fbp From: fbp@cybvax0.UUCP (Rick Peralta) Newsgroups: net.puzzle Subject: Re: Sailboat pennant. Message-ID: <640@cybvax0.UUCP> Date: Thu, 25-Jul-85 11:33:43 EDT Article-I.D.: cybvax0.640 Posted: Thu Jul 25 11:33:43 1985 Date-Received: Sun, 28-Jul-85 01:16:58 EDT References: <3258@decwrl.UUCP> Reply-To: fbp@cybvax0.UUCP (Rick Peralta) Organization: Cybermation, Inc., Cambridge, MA Lines: 30 In article <3258@decwrl.UUCP> schoeller@alien.DEC writes: >If a boat was jiving into the wind, wouldn't the pennant be pointing more >towards stern than bow? Sure it would; and the boat would still be running. >Boat sails are made so that when the wind fills them up, they create an air- >foil. This allows them to run without having the wind to their backs. The >boat must cut the wind at an angle but not directly into the wind in order for >this to happen. To move in the general direction of the wind, the boat must >"jive" (in other words, make a zig-zag pattern running the boat to a point to >the right of the source of wind and then to the left). This causes the boat >to travel a greater distance, but it is still moving against the wind. There- >fore, jiving the boat into the wind causes the pennent to point toward the >stern (not directly pointing at the stern {unless during a jive}, but more >towards stern than bow. > I see what you are suggesting. Sort of like skating on the apparent wind. To get it to work wouldn't you have to pump the sail a bit as you came about ? I'll try this next chance I get. > >> Which is the longest U.S. coast line ? > >As for the longest coast line, I would guess the California, Oregon, Washing- >ton, Alaska, Hawaii (Pacific Ocean) coast-line. Be carefull, this is sort of a trick question. Rick ...!cybvax0![dmc0!]fbp "A likely story. I don't believe a word of it."