ALSEAMAR designs and manufactures portable trajectography systems for devices moving under water, torpedoes or drones, under the GIB product line.

Consisting of a control unit and a set of buoys, they receive the signals transmitted by the acoustic transmitter mounted on the underwater device being tracked. The buoys measure distances and use a local radio network to periodically transmit their GPS position and the distances measured to a control unit installed on a support or land vehicle. This unit triangulates the positions of the underwater device and displays them on a map in real time and with great precision.

GIB portable trajectography systems are used by manufacturers in the naval sector to qualify their subsea machinery and by naval forces to train their crews and to intervene in the event of a stricken submarine in order to accurately locate it.

ALSEAMAR X-SUB buoys allow submarines to communicate with above the sea’s surface without raising a periscopic communications antenna. The submarine continues its course, undetectable at its operational depth.

The X-SUB buoy is a device released via the standard ejector (sippican). The buoy then rises to the surface and remains connected to the submarine by a wire connection.

The buoy acquires the GPS and the AIS positions, which are transmitted to the submarine. The GPS and the AIS positions are visible on board the submarine on a designated operating unit screen.

Once the wire connection is broken, the buoy automatically scuttles and sinks.

ALSEAMAR designs and manufactures subsea propulsion vehicles used to transport frogmen (2 to 6 combat divers— depending on the type of vehicle) during special operations: expansion of their scope of operations, strategic target attacks on land and at sea, infiltration or exfiltration of commando units, intelligence, surveillance and reconnaissance missions, and maritime counter-terrorism.

ALSEAMAR's manned submarine propulsion vehicles are ergonomic to avoid diver fatigue and have high endurance, navigation accuracy and communication and observation capabilities. They can be deployed from the shore, boats or submarines using a dry deck shelter. They have a large loading capacity and are easy to use.

ALSEAMAR designs and manufactures multi-purpose submarine antennas covering a wide range of frequencies from VLF to UHF and equipped with satellite communication.

Installed in a particularly compact hoisting mast, the antennas enable the simultaneous emission and reception of several frequencies, despite their small size.

ALSEAMAR antennas are compact while ensuring high levels of performance and are particularly suited to the requirements of subsea communication.

ALSEAMAR has long experience in the design, simulation, manufacturing and characterization of antennas for vessels (both active and passive antennas covering different frequencies: VLF/LF, HF, V/UHF, UHF) and high-performance multi-couplers to dispatch input/output signals. These antennas and multi-couplers can be used to create a subsystem of antennas for surface vessels that incorporate the most stringent radar cross-section reduction requirements.

ALSEAMAR designs, manufactures and operates autonomous, high-endurance subsea drones: the SeaExplorer gliders.

Designed to collect data over large areas (thousands of kilometers), over long periods (months) and at great depths (up to 1,000 m), SeaExplorer gliders are propelled by buoyancy variation. SeaExplorer vehicles silently glide along the water column, collecting physical, chemical, biological and/or acoustic data, depending on the sensors installed. Their major added value lies in their low procurement and operating costs compared to the vessels or other means traditionally used for the same type of mission.

SeaExplorer gliders are easy to operate and can be deployed and recovered by a smaller crew, using small boats in coastal waters. Remotely controlled via satellite communication, they receive orders from the control PC at an ALSEAMAR site or at another designated site and transmit navigation information and collected data to land.

SeaExplorers are used by scientists and oceanographers, by environmental agencies responsible for protecting seas and oceans, by operators in the oil sector and by navies.

ALSEAMAR operates Gliders for its clients on a  24/7 basis and in every sea of the world.

The MURENE subsea light vehicles are a new grade of subsea diver propulsion systems. They have been designed to provide the best ergonomics and performance standards for combat swimmers. They can be deployed from the shore, a boat or submarine. A large cargo capacity, high navigation accuracy and excellent swimmer protection are the key strengths of these vehicles.

Equipped with the latest generation of fibre-optic gyroscope navigation systems combined with a DVL, the MURENE can lead offensive operations in coastal zones and shallow waters in order to neutralize maritime or land targets. Their small size and easy maneuverability make them the perfect tool to furtively approach targets as close as needed.