The hulls of these great ships were iron, armored with steel.
Usually fiberglass or wood, but there are catamarans whose hulls are constructed of cement.
Kelly's
Hulls are on ships not in ponds.
Barnacles are shellfish that cling to rocks or ships hulls.
the very first submarine was made in the revolutionary war and was designed to drill through the hulls of british ships and plant bombs but it failed all of its missions
Boat hulls are currently usually made of fiber glass. Fiber glass is the cheapest, most effective material. Boat hulls can also be made of wood, carbon fiber, and steel.
As in crew boats? Shells, Skulls and hulls that kinda stuff
* Tools * Wires * Rails for trains * Girders for making buildings * Hulls of ships * Body of cars and trains * Major appliances * Cutlery and knives * Rulers
"Ship camouflage" has been used to confuse enemies.
Cars, Utensils, some Rulers, Scaffolding, Tools, Wires, Rails for Trains, Hulls of Ships, Major appliances! there are most definitely too many to list here.
Antarctica is surrounded by ice and icebergs can damage ships without reinforced hulls especially designed for polar travel.