Ebay item# 2438840197 $3500-$5000USD
30'NovaMarine Hypalon RIB tube;NightStalker
This is an excellent condition inflatable sponson, surplus for a large U.S. Navy RIB(Rigid Inflatable Boat). I believe it is for a late '90s manufactured 30' NovaMarine Navy Special Warfare boat, based on their Night Stalker HD Nine. Numerous 30'-36' Diesel RIBs with extra collar / tube sets were aquired by the Navy Seals since the late 1990's.
This tube set is black, approximately 25" diameter, with 11 separate chambers, valve caps marked 'NovaMarine 2', has full length lifeline/lashing strips, lifelines, 2 rubstrake/splash deflectors, and hemispherical aft termination(not cones). At about the bottom of the tube is a single hull mounting strip incorporating 5/8" rope for either a 'continuous keyhole' type hull attachment or potentially bolt through mounting, and a wide strap hanger each side aft.
With Hypalon's easy workability, you could modify or trim it to fit your Hurricane, Avon, Willard, or Tornado; fabricate a huge river raft or even weld a custom aluminum hull!
This will fold up onto a pallet for truck freight shipment;