Mars Marine Services (Al Marsa Marine Overseas LLC) is an international marine services provider with offices at Duqm, Sohar, Salalah and Muscat in Oman. Beyond cargo and marine surveys, services include sourcing and supply of spares and stores (deck, safety, technical), provisions and bonded stores, valves (with and without class approval), marine lubricants, greases and chemicals (Marichem, Shell, Caltex), radio surveys including SVDR APT, ultrasonic and NDT measurements with major class approvals, magnetic compass adjustment (the only provider in Oman), portable gas instrument calibration, lifeboat and liferaft service and testing (Viking, RFD, Beaufort, DSB, Arimar, Autoflug, Survitec), LSA and breathing-apparatus servicing, manpower for main/auxiliary engine, boiler and blower repairs, electrical motor repair and rewinding, and underwater/diving services.