hostile waters
- treacherousDisloyal and dangerous
- stormyMarked by violent weather
- shark-infestedFull of dangerous fish
- enemyHostile opposing party
- submarineUnderwater naval craft
danger · perilous · rough · turbulent · menacing · naval · warship · torpedo · patrol · contested · dangerous · murky · deep · ominous · combat · blockade · minefield · unfriendly
safety and navigability
hostile waterssafe harbor
Protected place for vessels
protected waters · sheltered waters · safe passage · haven · calm seas