SEAL carrier operates in three modes; surface, semi-submerged and submerged.
Launched from a surface ship, SEAL carrier vehicles transit at speeds of up to 30kts on the surface before switching to submerged mode for a covert final approach.
SEAL Carrier is an 8-man swimmer delivery vehicle designed for the covert insertion and extraction of combat diver units.
Example applications for a SEAL Carrier include:
- Delivery of six-man combat team
- Host platform for autonomous underwater vehicles
- Remotely operated weapons platform
- Harbour patrol vessel
- Rapid-response anti-piracy craft
- Mine countermeasure operations
On board sensors and navigation systems work together to provide safe transit and accurate positioning day and night, above or below the surface of the water, regardless of vehicle speed or environmental conditions.
In addition to divers and their personal equipment, SEAL Carrier accommodates additional mission equipment such as sensor - and radio equipment, ammunition and explosives, survival equipment and supplies. For operations requiring extended range, the craft can carry additional fuel stored in a separate fuel tank or additional battery packs.
|Dimensions||Weight||Crew (Max)||Diesel engine||Fuel capacity (installed bag)||Thrusters||Battery pack (basic system)|
|Length - 10.45m||4000kg||2 pilot + 6 divers||257 kW (350 hp)||360 | (300kg)||2 x 10 kW||LiPo (38kWh)|
|Beam - 2.21m||Semi-submerged to 10m depth - 30 s|
|Height to top of cabin - 1.65m||Breaking surface to 25 kts - 150 s|
|Height to top of activated snorkel - 2.65m||Semi-submerged to 25 kts - 120 s|
|Max draught fully loaded - 0.5m|
As illustrated in the Concept of Operation, SEAL Carrier operates in three different modes, offering an ideal balance between range, endurance and mission ﬂexibility.
SEAL Carrier's two propulsion systems are designed to provide optimum performance, whether travelling at speed on the surface or quietly whilst fully submerged.
In surface mode, SEAL Carrier is propelled by a water-cooled, 345 horse power diesel engine coupled with a Rolls Royce water jet. Together they allow for perfect manoeuvrability. The nozzle of the water jet is controlled hydraulically and is independent of the other hydraulic systems onboard. A reversing gear is supplied.
Diesel fuel is contained within a 360 litre bag located forward of the engine compartment. A second, additional fuel bag may be fitted to provide SEAL Carrier with increased range of up to 300 nautical miles.
To reduce the visible, accoustic and radar signature of SEAL Carrier, the vehicle can be operated in semi-submerged mode.
In this mode, the diesel engine and water-jet remain the propulsion system of choice and can propel the craft at sprint speeds of up to six knots. The vehicle’s typical cruise speed in this mode is four knots.
The electrical propulsion system - typically reserved for use in submerged mode - made be used if required.
Air intake is achieved via a hydraulically actuated snorkel. The navigator may raise the height of the snorkel by up to a meter so as to avoid water ingress. Sensors within the snorkel seal the engine capsule and prevent the diesel engine from starting if the presence of water is detected within the air inlet system. When not in use, and in surface mode, the snorkel sits flush to the superstructure.
The surface propulsion system is contained within a stainless steel casing maintained at a constant pressure. This allows SEAL Carrier to transition into submerged mode seamlessly.
Whilst operating in surface- and semi-submerged modes, the diesel engine and onboard generator charge the lithium polymer batteries.
In submerged mode these batteries deliver power to two electric thrusters installed at the vehicle’s transom. This propulsion system affords SEAL Carrier a submerged range of 15 nautical miles at a speed of up to five knots. SEAL Carrier’s typical cruise speed in submerged mode is three knots.
Additional battery packs may be installed to provide twice the range and endurance in fully-submerged mode.