船体 is read as せんたい (sentai) and means hull.
せんたい
sentai
ふなおさ
boatman
せんびん
ferry service
ふね
counter for boat-shaped containers (e.g. of sashimi)
せんしゅ
shipowner
せんぷく
side or bottom of a ship
ふなたび
trip by boat
せんしつ
stateroom
ふなで
setting sail
せんいん
sailor
bow (of boat)
ふながいしゃ
steamship (shipping) company
せんどう