T&T: Bob Phillips, Anti Roll Tank, Vol 78, Issue 13

[Phillip Carr]

> Bob,



> I was most interested to hear your comments on the anti roll debate and I
> would like some more information on your elegant solution if you have time.
> I always felt that bilge keels would need to be substantial al la Cape Horn,
> to make a noticeable difference and flopper-stoppers somehow seem a complex
> and "un-seaman-like" solution.



> I was a deck officer on the ill-fated British LSL Sir Galahad and as a tank
> landing ship she was shallow draft and flat bottomed loa 412 feet, beam 60
> feet an Draft 13 feet. As we used to say "she rolled on wet grass"! She was
> modified to reduce rolling by fitting a stabilising tank on the boat deck
> (as high above centre of buoyancy as practicable. The tank was designed by
> Spume a Scandinavian firm and was basically a tank almost the full beam of
> the vessel about 4 ' x 4' and fitted with internal baffles and part filled
> with seawater to a critical level. It really made a difference and was
> virtually maintenance free. No doubt the devil is in the calculations of
> size depth of fluid and baffle design.



> Looks to me like a cost effective solution to the problem. Thanks for your
> advice.



> Phillip Carr