[Alberg30] Sally Ship

[Robert Kirk]

Gordon LACO wrote:

>We did something similar with our HMS Tecumseth in order to do the practical
>part of her stability curves... we took about thirty people, weighed them
>all and moved them from port to midships to starboard and noted the effect
>on a long pendulum set up down the mainhatch.  Interesting stuff.

It sounds similar to a drill I've heard of but never seen: attach a long 
line to the masthead (like a halyard) and use a crane ashore to pull the 
ship sideways a couple of inches against a camel or the pier. The crane's 
tensiometer reading, combined with the distance from the ship's CG to the 
masthead, gives the ship's righting moment.

Bob Kirk
Isobar #181



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