G'day Bill, Swan Song weighs in at 95,000 lbs +/- some fuel water and stores. Our roll tank is 12' X 4' X 1.5' and has 195 gallons of water for ~1550 lbs. This tank was designed for Swan Song and the place that we wanted to put it. It could have been bigger smaller, lighter or heavier if we had chosen a different location for it. Each boat requires the tank to be designed for it so there is no "universal or approximate size" for any particular boat. Don Bass, working with you or your Naval Architect, is the only way to determine if your boat is a suitable candidate and if it is to work up a preliminary set of specs. Anti roll tanks aren't black magic but they just can't be built and put on any vessel in any location. Let me know if I can give you anymore info :-) Cheers Dave & Nancy Swan Song Roughwater 58 Caribbean Cruise '07 -----Original Message----- From: passagemaking-under-power-bounces+swansong=gmn-usa.com@lists.samurai.com [mailto:passagemaking-under-power-bounces+swansong=gmn-usa.com@lists.samurai .com] On Behalf Of bill Sent: Thursday, June 28, 2007 9:12 PM To: passagemaking-under-power@lists.samurai.com Subject: [PUP] PUP] In praise of paravanes Dave and Nancy - Swan Song What is the size, gallonage, of your anti-roll tank on this boat of 60,000#? thanks, Bill ____________________________________________________________________________ ________ Building a website is a piece of cake. Yahoo! Small Business gives you all the tools to get online. http://smallbusiness.yahoo.com/webhosting _______________________________________________ http://lists.samurai.com/mailman/listinfo/passagemaking-under-power To unsubscribe send email to passagemaking-under-power-request@lists.samurai.com with the word UNSUBSCRIBE and nothing else in the subject or body of the message. Passagemaking Under Power and PUP are trademarks of Water World Productions, formerly known as Trawler World Productions.