I found this on Ebay http://www.ebay.com/itm/260980430041?_t ... 97.c0.m619. It is a five button 200 sec sound card that is programed with your PC.
Many uses for this little dude. On static models you can arrange the buttons to give nosies for each section of the boat. Would be great on the cutaway 1/72 Type VII. On a US Nuke boat you canuse ittodescribe various watch stations, play songs whatever.
For RC boats well the sky is the limit.
Don MMC/SS USN Ret.
Author of OF ICE AND STEEL, EPITAPH