The Nevelskoy Strait is a strait

Strait

A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not...

 between Eurasia

Eurasia

Eurasia is a continent or supercontinent comprising the traditional continents of Europe and Asia ; covering about 52,990,000 km2 or about 10.6% of the Earth's surface located primarily in the eastern and northern hemispheres...

 and Sakhalin

Sakhalin

Sakhalin or Saghalien, is a large island in the North Pacific, lying between 45°50' and 54°24' N.It is part of Russia, and is Russia's largest island, and is administered as part of Sakhalin Oblast...

 that connects the main body of the Strait of Tartary

Strait of Tartary

Strait of Tartary is a strait in the Pacific Ocean dividing the Russian island of Sakhalin from mainland Asia , connecting the Sea of Okhotsk on the north with...

 with the Amur Liman

Amur Liman

The Amur Liman is a liman of the Amur River, the northern part of the Strait of Tartary between Eurasia and Sakhalin. It connects the Sakhalin Gulf of the Sea of Okhotsk with the main body of the Strait of Tartary via the Nevelskoy Strait....

 (Amur River estuary

Estuary

An estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea....

). It was named in memory of Capt. Gennady Nevelskoy

Gennady Nevelskoy

Gennady Ivanovich Nevelskoy was a Russian navigator.In 1848 Nevelskoy led the expedition in the Russian Far East, exploring the area of the Sakhalin and the outlet of the Amur River. He proved that the Strait of Tartary was not a gulf, but indeed a strait, connected to Amur's estuary by a narrow...

 who in 1849 difinitively established that the Strait of Tartary is connected with the Amur estuary and thus is in fact a strait, and not a gulf

Bay

A bay is an area of water mostly surrounded by land. Bays generally have calmer waters than the surrounding sea, due to the surrounding land blocking some waves and often reducing winds. Bays also exist as an inlet in a lake or pond. A large bay may be called a gulf, a sea, a sound, or a bight...

.

Length: 56 km, width (narrowest): 7.3 km, fairway depth: 7.2 m.

The strait was a place for the contemplated Sakhalin Tunnel

Sakhalin Tunnel

The Sakhalin Tunnel is an incomplete and currently postponed construction project, which after completion would connect the island of Sakhalin with mainland Russia via a tunnel of approximately 10 km under the Nevelskoy Strait...

.