In the North Sea north of the Dogger Bank, for instance, the disk is visible in calm weather to a depth of from io to 16 fathoms, but in rough weather only to 62 fathoms. Knipovitch occasionally observed great transparency in the cold waters of the Murman Sea, where he could see the disk in as much as 25 fathoms, and a similar phenomenon has often been reported from Icelandic waters.
A new military harbour, Alexandrovsk or Port Catherine, has been made on Catherine (Ekaterininsk) Bay, on the Murman coast of the Kola peninsula.
In addition from 13,000 to 60,000 seals and about 200 whales are killed annually off the Murman coast.
The southern part, off the Murman coast of the Kola peninsula, is sometimes called the Murman Sea.
Russia, in the government of Archangel, on the harbour of Catherine (Ekaterininsk), on the Murman coast, 5 m.