http://www.cruisersforum.com/forums/ Brain teasers, and brain storming. This is the place if you want to challenge your skills as a cruiser, be it from a mechanical, seamanship, or practical knowledge point of view. en Sat, 21 Nov 2009 07:30:08 GMT vBulletin 60 http://cdn.cruisersforum.com/forums/../ugala/forums/images/misc/rss.jpg http://www.cruisersforum.com/forums/ http://www.cruisersforum.com/forums/f131/challenge-preventing-loons-from-roosting-on-spreaders-32944.html Wed, 11 Nov 2009 11:10:38 GMT What a mess ! I've had birds before, but this is unbelievable.

I'll stretch a line between mast and rigging above spreader, but if anyone has had success dealing with loons, perhaps they could suggest the most effective distance this line should be above the spreader, or any other idea. Now is not the time to experiment !

Thanks ! ]]> Challenges ggray http://www.cruisersforum.com/forums/f131/challenge-preventing-loons-from-roosting-on-spreaders-32944.html http://www.cruisersforum.com/forums/f131/special-size-cutlass-bearing-32834.html Sun, 08 Nov 2009 12:45:50 GMT oke I thought I had it all figured out and planned to make it work. Removed the propellers, removed this section where the cutlass bearing sits in.... oke I thought I had it all figured out and planned to make it work.
Removed the propellers, removed this section where the cutlass bearing sits in. Than removed the stern tube and took the last part out where the cutlass bearing sits infront of the stuffing box.
Bought 4 new 1 3/4 ID and 2 5/8 cutlass bearings. Now it seems that the inside bearings have a different size. They are 1 3/4 by 2.5 inch. The suppliers here on the island told me that this size is a not existing one. can any one tell me if this is available on the market.

thanks Ton ]]> Challenges Hooijkaas http://www.cruisersforum.com/forums/f131/special-size-cutlass-bearing-32834.html http://www.cruisersforum.com/forums/f131/wind-over-tide-32570.html Sat, 31 Oct 2009 22:33:29 GMT I just had one of my Navigation students ask me the physics of the phenomena of wind and tide in opposite directions causing short, steep waves. I... I just had one of my Navigation students ask me the physics of the phenomena of wind and tide in opposite directions causing short, steep waves. I cannot explain the physics but know it to be true. Anyone know the physics involved? ]]> Challenges Rex Delay http://www.cruisersforum.com/forums/f131/wind-over-tide-32570.html http://www.cruisersforum.com/forums/f131/challenge-ship-out-of-the-fog-dead-ahead-now-what-32488.html Thu, 29 Oct 2009 18:49:00 GMT In a recent discussion I think I saw a statement that any vessel on a collision course, in a position to have to avoid a collision (regardless of... In a recent discussion I think I saw a statement that any vessel on a collision course, in a position to have to avoid a collision (regardless of who was initially the stand-on vessel), was required to turn to starboard.

Is that really correct ?

If it is correct and I suddenly see a boat on a collision course coming out of the fog slightly to port, then I'd have to turn to starboard even if turning to starboard only helps avoid the collision if the other skipper is also awake and also turns to his/her starboard ?

IOW, turning to port with no action on the part of the possibly sleeping skipper would avoid the collision, but turning to starboard with the possibly sleeping skipper doing nothing does not avoid the collision.

I can certainly understand how such a rule would come about but sleeping skippers really mess up the logic, if the rule is really as I think I read.

Thanks,



-Sven ]]> Challenges SvenG http://www.cruisersforum.com/forums/f131/challenge-ship-out-of-the-fog-dead-ahead-now-what-32488.html http://www.cruisersforum.com/forums/f131/challenge-old-school-new-think-sextant-32297.html Sat, 24 Oct 2009 03:10:03 GMT Back in the seventies (I'm an old fart) there was a Time Magazine article abot someone who was going to build a sextant with a chronometer built into the handle. This never came to market, and with GPS, probably will never do so, as well. I'd like to hollow out the handle on one of my sextants and build a pushbutton to "mark" my own sights. Does anyone know of chronometer kits that could do the job? ]]> Challenges Roy M http://www.cruisersforum.com/forums/f131/challenge-old-school-new-think-sextant-32297.html