SeaCat is a vehicle of moderate size and weight. Its design is modular and scalable and can thus be adapted to a variety of missions and applications. Modularity means that the SeaCat consists of several sections with a specific purpose each. The head section can be modified and thus allows for a multitude of sensor options, realised by different payloads. Several payloads can be preconfigured and integrated into specific payload heads according to the users needs. The so-called SwapHead concept makes it possible to exchange these heads in the field without special tools.
The tail cone includes all electronics for vehicle control and propulsion.
The vertical thruster is used for low-speed depth control and hovering mode.
The centre section houses the batteries, navigation sensors and sidescan sonar electronics. All antennas for GPS reception and communication (Iridium, WLAN, acoustic modem) are located on top of this section. Additionally, there are connectors for recharging, protected by the turret cover. Underneath the centre section, a set of trimming weights can be attached to balance buoyancy according to the ambient salinity.
The bow thruster section includes a vertical and a lateral thruster for increased manoeuvrability at low speeds. Especially the lateral bow thruster allows accurate manoeuvring during the launch and recovery phase.
A pressure-tight bulkhead forms the interface to the SwapHead. This section includes the Tritech Micron DST scanning sonar which supports navigation when the vehicle operates in ROV mode within confined areas.
The system's capabilities can be expanded easily by plug & play. The SwapHead, attached to the bulkhead features a hydrodynamically optimised fairing around payload systems located in a flooded environment. This concept allows changing the payload on site.
The MultiCom system features several parallel communication links that enable the operator to control and monitor SeaCat AUV missions.
The direct environment of the AUV is mapped by a 360° scanning sonar.