英文關鍵字
armada
artillery
attack
battleship
bay
boat
boats
bow
cannons
clipper
cutter
deck
defend
defensive
destroyer
diesel
dreadnaught
fleet
flotilla
frigate
gray
grey
gunboat
guns
harbor
journey
marine
military
motor
nautical
naval
navy
nuclear
ocean
power
protect
sea
seafaring
security
ship
ships
steel
stock
transport
transportation
vessel
video
warships
water
wave
weapons
yacht