ABISMO

History
Japan
Name	ABISMO
Owner	The Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
Operator	JAMSTEC
Builder	JAMSTEC
Maiden voyage	2007
In service	2007
Homeport	Yokosuka, Japan
General characteristics
Type	remotely operated underwater vehicle
Tonnage	300kg in the air[1]
Displacement	100kg in the water[1]
Length	1.3 m (4 ft 3 in)[1]
Height	1.1 m (3 ft 7 in)[1]
Installed power	electrical (Lithium-ion batteries)
Propulsion	Thrusters (Longitudinal direction: 400W×4 sets, Transverse direction: 400W×2 sets), Crawler (Longitudinal direction 400W×2sets)[1]
Test depth	11,000 meters
Complement	Uncrewed
Sensors and processing systems	side-scan sonar, NTSC type color TV×1channel & search lights[1]

ABISMO (Automatic Bottom Inspection and Sampling Mobile) is a remotely operated underwater vehicle (ROV) built by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) for exploration of the deep sea. It is the only remaining ROV rated to 11,000-meters (after Nereus, built and operated by the Woods Hole Oceanographic Institution was lost at sea in 2014), ABISMO is intended to be the permanent replacement for Kaikō, a ROV that was lost at sea in 2003.