we have a watertender 9.4, pretty common at least on the
east coast of the u.s.a., i've seen it
for sale at west
marine for about $600. the admiral prefers it to our inflatables. it's got a double
hull with air space in between.
since it's possible for it to leak between the hulls it also has a drain
plug and you're supposed to tip it up once in awhile and remove the drain
plug to let out any
water that's accumulated between the hulls. i occasionally do this but have never had any
water come out.
a few years ago we were in the
exumas, going about a half mile to shore. we had a 3.5 hp j/e on the back and a bundle of clothes in the
boat. it was a bit choppy. the admiral leaned too far forward for some reason and buried the bow. in an instant the
boat was full of water up to the gunwhales. but it was floating and level. i shut the
engine down (it was still above water) and we just sat in the boat and bailed it out. then started the
engine and continued on our way.
i also once saw a couple of guys at fernandina beach lower an atomic four into a watertender from a
dock, then tow it out to a sailboat in the harbor, then pick it up with the
mainsail boom. interesting....