semar 77Semar 77 (IMO: 9178240) is a SMALL CLEAN TNKR that was built in 2001, previously known as Griya Gayo. Get the latest valuation data, real time AIS position, technical details and more.SEMAR 77 (IMO: 9178240) is a Oil Products Tanker and is sailing under the flag of Indonesia. Her length overall (LOA) is 160 meters and her width is 27 meters.