Hvasser is a populated island and a village in Tjøme

Tjøme

Tjøme is a municipality in Vestfold county, Norway. The administrative centre of the municipality is the village of Tjøme. The parish of Tjømø was established as a municipality on 1 January 1838 .-Name:...

 municipality, Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

, connected to mainland and the city of Tønsberg

Tønsberg

is a city and municipality in Vestfold county, southern Norway, located around north-east of Sandefjord. The administrative centre of the municipality is the city of Tønsberg....

 via the islands Brøtsø, Tjøme

Tjøme

Tjøme is a municipality in Vestfold county, Norway. The administrative centre of the municipality is the village of Tjøme. The parish of Tjømø was established as a municipality on 1 January 1838 .-Name:...

 and Nøtterøy

Nøtterøy

Nøtterøy is a municipality in Vestfold county, Norway. The administrative centre of the municipality is the village of Borgheim.The parish of Nøtterø was established as a municipality on 1 January 1838...

. The name comes from the Norwegian word "hvass", meaning sharp, which is owed to sharp cliffs on the island.

Hvasser is also the pilot

Maritime pilot

A pilot is a mariner who guides ships through dangerous or congested waters, such as harbours or river mouths. With the exception of the Panama Canal, the pilot is only an advisor, as the captain remains in legal, overriding command of the vessel....

 harbour for ships in and out the Oslo fjord. There is also a fish reception establishment.