On 25 November, 2006 Crane vessel Hoà ng Sa of Joint Venture Vietsovpetro arrived at HVS quay for repair within 40 days. HVS carried out propeller overhaul, ballast valve overhaul, ballast tank coating, ballast pipe renewal, cargo crane (1,200 tons) overhaul and load test. Hoà ng Sa was successfully repaired and delivered to the owner on 30 December, 2006, 3 days earlier than the schedule. After Hoà ng Sa, Vietsovpetro will send Côn Sơn vessel to HVS to repair.