Harvey Gulf Rental / Leasing
LNG-Powered Offshore Supply Vessels
310' OSVs running on LNG, diesel and battery, the first LNG-powered offshore support vessels in North America, with ABS ENVIRO+ notation.
Description
Harvey Gulf's 310' LNG vessels are offshore supply vessels running on LNG, diesel and battery (tri-fuel: Harvey America, Freedom, Liberty and Power) or dual-fuel LNG (Harvey Energy). According to the company, LNG reduces CO2 emissions by up to 26% versus conventional fuels and eliminates up to 99% of NOx, SOx and particulate matter. Harvey Gulf launched the first tri-fuel platform support vessel in 2020, and by the end of 2022 all its LNG vessels were battery powered.
Key features
- Typical machinery (Harvey Power, 2015): 3 × Wärtsilä 6L34DF main generators (7,530 kW total)
- 2 × Wärtsilä FS300-S/WN azimuthing propellers in nozzle (7,241 HP total) and 2 × Wärtsilä bow thrusters (1,992 BHP total)
- LNG capacity 78,000 USG (295.3 m³); Kongsberg K-Pos 21 dynamic positioning
- Notations include DPS-2, ENVIRO+, FFV-1 and GFS (Dual Fuel Diesel)
- Bunkered at Harvey Gulf's own LNG facility in Port Fourchon
Applications
Transport of deck cargo, bulk, methanol and personnel for deepwater oil and gas operations in the U.S. Gulf of America, for operators seeking lower-emission vessel support.
Specifications
| Length overall | 310 ft / 94.5 m |
|---|---|
| Beam | 64 ft / 19.5 m |
| Deadweight (DWT) | 5,135 LT |
| Maximum speed | 14.00 knots |
| Cruising speed | 12.00 knots |
| LNG capacity | 78,000 USG / 295.3 m³ |
| Main generators | 3 × Wärtsilä 6L34DF (7,530 kW total) |
| Main propulsion | 2 × Wärtsilä FS300-S/WN azimuthing propellers in nozzle (7,241 HP total) |
| Bow thrusters | 2 × Wärtsilä (1,992 BHP total) |
| Deck cargo area | 10,480 ft² |
| Dynamic positioning | Kongsberg K-Pos 21 |
More from Harvey Gulf
Featured services
All services →
Engineering & Design
Keel Cooler & Boxcooler Sizing and Engineering
Free application engineering from Fernstrum: cooler sizing, configuration, placement and installation advice for keel coolers and boxcoolers based on your engine, vessel and operating conditions — with data on file for all major engine makers.
Remote / Digital Service
Crew Support (PTC App)
Administrative services for PTC seafarers and families via the PTC App, including sea service records, MARINA MISMO encoding and social costs certification.
Inspection, Survey & Testing
General Dynamics Mission Systems
Open Water Acoustic Testing Facility
Progeny Systems open water acoustic test facility in Gloucester, Massachusetts, performing flow and high-frequency acoustic measurements of transducers.