Atmosphere

This depiction of a rocky coast in moonlight, by an unknown Russian artist, is in the tradition of romantic painters such as Aivazovsky. Not only is it full of drama and mystery, but it's beautifully composed.

Paul von Spaun

The German or Austrian painter Paul von Spaun (1876-1932) is known for his depictions of the coastline of the Italian island of Capri, where he lived for many years.

Edward Seago

Edward Seago (1910-1974), Storm at Sea 1956-7.
I think this is one of a series of sketches the artist made from the deck of a ship visiting the Antarctic. An iceberg is visible on the horizon.