Onderzeeboot Tonijn bij het Marinemuseum in Den Helder

Submarine Tonijn

Submarine Tonijn is the showpiece of the museum-fleet. It is the only submarine in the Netherlands open to public and a popular film location.

The Tonijn is a three-cylinder submarine of the ‘Potvis class’. Between 1960 and 1992 three-cylinder submarines formed the heart of the Dutch submarine department. Their primary duty was to combat Soviet submarines. Due to their invisibility and noiselessness, they proved extremely suitable for collecting data on ships of the Warsaw Pact. For this purpose secret patrols were carried-out frequently on the Arctic Sea and the Mediterranean Sea.

The Tonijn was constructed at the Wilton-Fijenoord shipyard in Schiedam. The Dutchman M.F. Gunning developed the principle of the three-cylinder submarine. This construction improved the boat’s stability, allowing it to dive deeper than other submarines of its time. The crew consisted of 67 members: a commander, six officers, thirteen petty officers, 20 corporals and 27 members of crew. Depending on the journey the crew could be increased to a maximum of 71 persons.

The Tonijn is still in its original state. Crawl through the hatch and get the feeling the boat might depart any moment. Peer through the periscope and listen to the exciting stories told by our museum attendants. Many of them have served on a submarine of this class!

Bridge House De Ruyter

Discover the guided missile destroyer and its crew and learn all about 3D-radar!

The Hr.Ms.De Ruyter (1976-2001) and its sister ship Hr.Ms. Tromp, alternately served as flagship for the Dutch Navy. The De Ruyter was primarily responsible for air defence, submarine combat and command. The most remarkable feature of the guided missile destroyer is the high radome on top of the bridge. The powerful 3D-radar inside could detect over a hundred targets simultaneously, up to a distance of 400 kilometres. The fact that the radar could measure not only the direction and distance but also the height of the object, was revolutionary. In a split second the command-centre could therefor react to hostile movements.

The bridge and radome were transformed into an attraction for visitors in 2011. A crisis situation is simulated in the radar-cabins and the dome allows you to experience the force of the wind caused by the radar turning at a speed of 20 rotations per minute. On the bridge itself a dazzling presentation shows the world of present -day naval forces.