Eastern Shipbuilding launches HOS Riverbend

On Sept. 6, Eastern Shipbuilding Group launched the HOS Riverbend, the fourth in a series of four HOSMAX 300 offshore support vessels that Eastern is building for Hornbeck Offshore Services.

The 292’x64’x24’6″ HOS Riverbend is a diesel-electric powered, twin Z-drive propelled OSV. It features four Caterpillar 3516C 16-cylinder turbo-charged Tier 3 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 provided 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 provided 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.  

These vessel is capable of a maximum speed of 14 knots with a cruising speed of 12 knots.  

The HOSMAX 300 OSVs feature the following capacities:

Total fuel oil capacity: 241,141 USG
Fuel oil day-tanks 20,190 USG
Drill water/ballast capacity: 562,822 USG
Potable water capacity: 57,494 USG
Liquid mud capacity: 20,846 bbls. (10) tanks
Dry-bulk mud: 14,347 cu.ft. (7) tanks
Methanol capacity 1,605 bbls. (2) tanks
Clear deck area: 10,585 sq.ft. 

Covington, La.-based Hornbeck has 10 OSVs under contract at Eastern Shipbuilding located in Panama City, Fla. The remaining six OSVs under contract are 302’x64’x26′ HOSMAX 310 OSVs.

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