Answer: openseas

AnswerCrossword Clue
OPENSEAS

Cruise milieu

OPENSEAS

Liner's milieu

OPENSEAS

Middle of the ocean

OPENSEAS
Pirates' domain
OPENSEAS
Far from land.
OPENSEASFree waters
OPENSEASThese are outside a mare clausum
OPENSEASWhere pirates operate
OPENSEASWhere cruisers cruise
OPENSEASThey're beyond the harbor
OPENSEASPirate's domain