Nadezhda Strait

Nadezhda Strait (Russian: Proliv Nadezhdy; Japanese: Rashowa Kaikyo) is a strait that separates the islands of Matua and Rasshua. It is 25.8 km (about 16 mi) wide. The flood tidal current in the strait sets northwest, while the ebb flows to the southeast. These currents create tide rips and may reach over five knots.

It is named after the sloop Nadezhda.

WWII legacy
In the straight's waters, 2000 m to the south of Matua island, at a depth of 104 m there is a wreck site of USS Herring, sunk by camouflaged Japanese shore batteries on 1 June 1944.