Simpson Harbour

Simpson Harbour
Harbour
USNS Mercy at anchor in Simpson Harbour
Coordinates: 4°13′S 152°10′E / 4.217°S 152.167°E / -4.217; 152.167
CountryPapua New Guinea
TownshipRabaul
Named afterCortland Simpson
Time zoneUTC+10 (AEST)

Simpson Harbour is a sheltered harbour of Blanche Bay, on the Gazelle Peninsula in the extreme north of New Britain. The harbour is named after Captain Cortland Simpson, who surveyed the bay while in command of HMS Blanche in 1872. The former capital city of Rabaul is on its shores.

The harbour is part of a huge flooded caldera, Rabaul caldera. The harbour is ringed by a number of volcanoes.