Norway:
FS
Eger (FS
Marjata III for most of its career) is a purpose-built
electronic intelligence collection vessel (
ELINT).
She is owned by the
Norwegian Defence Research Establishment, but operated by the
Norwegian Intelligence Service, and is considered to be one of the most advanced ships of her kind in the world. Her main role is surveillance of the Russian
Northern fleet`s activity in the
Barents Sea, but is constructed for operations all over the world. She operates in
international waters close to the Russian border.
Marjata officially serves as a research ship for the
Norwegian Intelligence Service.
The ship can continue to operate even with large parts of the interior underwater, as the exact trimming of the ship is uncritical. The same applies if the cargo shifts, if the ship is exposed to icing or large amounts of water on the deck. The ship is additionally equipped to operate in arctic waters for long periods, but it is also designed for operations in other
marine areas. With the high stability of the hull and the overall structure of the structure to withstand large amounts of
icing, it is believed that operation in polar northern areas can last without interruption for very long periods. The ship is listed as a surveillance/intelligence vessel.
Eger is also known as a
spy ship and has done various spy operations throughout the years.
It is a
Ramform type ship-design with an unusual
hull shape. The shape of the hull is characteristic with a sharp
bow,
sinusoidal waterline, a descending rear body that ends in a straight cut-off
stern where the ship has the largest width. Because of the very large width of the ship it will have an operational metacentric height of about 16 meters. The ship can continue to operate even with large parts of the interior under the waterline, when the ship's exact trimming is uncritical. The same goes for cargo shift, if the ship is exposed to icing or large amounts of water on deck. This makes
Marjata a very stable sensor platform, she is also built with a very low noise signature, so that the ship itself does not interfere with the onboard sensors.
Marjata also has large internal bay for computing and analyzing of
reconnaissance data. The ramform type ships are often used for
seismological surveys of the seabed.
Marjata is well suited for operation in
arctic conditions for prolonged periods of time.