Large sea mines laid into sea outside Dublin harbour. 1940?
Mines are placed around coasts of Ireland and American men pay for army training.
The American military try out a new way to clear beaches of mines.
German naval mine sweepers at work destroying old mines still floating about after WW I.
British battleships at sea - day and night.
Various technical innovations from the U. S. Navy, including an aeroplane catapult.
This story shows an American battleship in action - fantastic aerial views.
Good shots of minesweepers at work in the open seas.
Eamon De Valera watches as mines are laid of the Irish coast.
A great new harbour is built in South Africa - Saldanah Bay.
South Africa sailors patrol their shores for illegal cargo vessels and mines.
8 reels of naval footage - some newsreel items, some unedited material. 1939?
8 reels of naval footage - some newsreel items, some unedited material.