Douglas Strait is a strait 2 nautical miles (3.7 km) wide between Thule and Cook Islands

Cook Islands

The Cook Islands is a self-governing parliamentary democracy in the South Pacific Ocean in free association with New Zealand...

, in the South Sandwich Islands. The existence of this strait was first noted by a Russian expedition under Bellingshausen in 1820. It was charted in 1930 by DI

Discovery Investigations

The Discovery Investigations were a series of scientific cruises and shore-based investigations into the biology of whales in the Southern Ocean. They were funded by the British Colonial Office and organised by the Discovery Committee in London, which was formed in 1918...

 personnel on the Discovery II and named for V. Admiral Sir Percy Douglas, member of the Discovery Committee

Discovery Committee

The Discovery Committee was a popular name for the Interdepartmental Committee for the Dependencies of the Falkland Islands established by the British Government to carry out scientific investigations and to propose nature resource conservation and economic development policies for the Falkland...

.