Scapa Flow

Scapa Flow is a body of water in the Orkney Islands, Scotland, United Kingdom, sheltered by the islands of Mainland, Graemsay, Burray, South Ronaldsay and Hoy. It is about 312 square kilometres (120 sq mi). It has a shallow sandy bottom not deeper than 60 metres (200 ft) and most of it about 30 metres (98 ft) deep, and is one of the great natural harbours/anchorages of the world, with sufficient space to hold a number of navies. Viking ships anchored in Scapa Flow more than 1,000 years ago, but it is best known as the site of the United Kingdom's chief naval base during World War I and World War II. The base was closed in 1956.

Scapa Flow in The War That Came Early
Scapa Flow was the main port of the British Home Fleet, and the pride of the United Kingdom. After the Big Switch in January of 1941, heavy bombers of the Soviet Air Force flying out of Murmansk launched a hit and run raid on the harbour, fleeing before the RAF could give chase.

Radio Moscow claimed the raid inflicted heavy damage while a RN spokes man was quoted in the Times as saying these claims were 'Great Exaggerated.'