Video: HOS Black Rock Launch, Sea Trials and Interior

HOS Black Rock courtesy Eastern Shipbuilding
HOS Black Rock courtesy Eastern Shipbuilding

The HOS Black Rock was constructed by Eastern Shipbuilding and recently delivered to Hornbeck Offshore Services. The vessel delivered eleven days early and on-budget, was Eastern’s seventh delivery of a ten offshore support vessel contract and the third vessel designated as the HOSMAX 310 series of OSVs by Hornbeck Offshore.

Each HOSMAX 310 vessel is a Diesel-Electric powered, twin Z-drive propelled OSV feating four Caterpillar 3516C 16-cylinder turbo-charged Tier III diesel generator engines each rated at 1,825 kW at 1,800 rpm. Main propulsion power is provided by two GE Energy furnished Hyundai 2,500 kW 690VAC electric motors driving two Schottel SRP 2020 FP Z-Drives with nozzles rated at 2,500 kW at 1,025 rpm each for a total of 6,704 Hp. Schottel also provides two STT 4 fixed pitch tunnel thrusters rated at 1,180 kW at 1,170 rpm, each with direct coupled Hyundai 690VAC electric motors. GE Energy Power Conversions provides the complete system integrated diesel electric package, including the propulsion and thruster drives, motors, control systems, DP system, switchboards, motor control centers, automation and navigation /communication electronics. The fully integrated bridge is arranged for increased visibility and features the latest technology in navigation, communication equipment.

All ten of the HOSMAX Offshore Supply Vessels are USCG, ABS Classed ?A1, Offshore Support Vessel and Ocean Service, Loadline, ?AMS, ?ACCU, ?Circle E, ?DPS-2 with additional ABS Class notations UWILD, ENVIRO, FFV-1 and certified under SOLAS/IMO.

The HOSMAX 310 Offshore Support Vessels feature the following characteristics:

Dimensions: 302’x 64’x 26’
Deadweight Tonnage: 6,144 LT
Total Fuel Oil Capacity: 285,649 USG
Fuel Oil Day-tanks 23,752 USG
Drill Water/Ballast Capacity: 609,227 USG
Potable Water Capacity: 62,538 USG
Liquid Mud Capacity: 21,509 bbl. (10) Tanks
Dry-bulk Mud: 14,347 Cu. ft. (7) Tanks
Methanol Capacity 2,212 bbl. (2) Tanks
Clear Deck Area: 11,137 Sq. ft.