Harrison Passage () is a passage between

Larrouy Island Larrouy Island is an island long and wide which rises to , (the Peak Pilot) lying in Grandidier Channel off the northwest coast of Velingrad Peninsula north of Ferin Head, Antarctica. It was discovered by the French Antarctic Expedition, 19 ...

and Tadpole Island to the west, and the

Llanquihue Islands The Llanquihue Islands () are a group of islands to the east of Larrouy Island, extending northward for from the west coast of Graham Land, Antarctica. They were charted by the British Graham Land Expedition under John Rymill, 1934–37. The nam ...

and the west coast of

Graham Land Graham Land is the portion of the Antarctic Peninsula that lies north of a line joining Cape Jeremy and Cape Agassiz. This description of Graham Land is consistent with the 1964 agreement between the British Antarctic Place-names Committee and ...

, Antarctica, to the east. It was photographed by

Hunting Aerosurveys Ltd Hunting Aerosurveys Ltd was a British aerial photography company founded by Percy Hunting in 1944. Its operations became more diversified under the name Hunting Surveys. History The firm incorporated Aerofilms Ltd and the Aircraft Operating Co ...

in 1956–57, and was mapped from these photos by the

Falkland Islands Dependencies Survey The British Antarctic Survey (BAS) is the United Kingdom's national polar research institute. It has a dual purpose, to conduct polar science, enabling better understanding of global issues, and to provide an active presence in the Antarctic on ...

. It was named by the

UK Antarctic Place-Names Committee The UK Antarctic Place-Names Committee (or UK-APC) is a United Kingdom government committee, part of the Foreign and Commonwealth Office, responsible for recommending names of geographical locations within the British Antarctic Territory (BAT) and ...

in 1959 for

John Harrison John Harrison ( – 24 March 1776) was a self-educated English Carpentry, carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the History of longitude, problem of calculating longitude while at s ...

, an English horologist who first definitely solved the problem of determining longitude at sea.

References

Straits of Graham Land Graham Coast {{GrahamCoast-geo-stub