SPACER SPACER SPACER SPACER SPACER SPACER
MARINE LOG MAGAZINESave the dates!
SPACER SPACER SPACER SPACER SPACER SPACER
CURRENT ISSUE

OFFSHORE WIND
What size market will offshore wind farms create for the U.S. marine industry?

Huge
Quite substantial
Limited
Negligible

HOS CENTERLINE

January 5, 2010

World's largest supply vessel goes to work

Hornbeck Offshore Services, Inc. (NYSE:HOS) has introduced the HOS Centerline, a Jones Act qualified, 370 ft multi-purpose support vessel (MPSV) to its fleet. It says that this HOS 370 design, with an 8,000 plus deadweight-ton capacity is "the largest and most diverse DP-2 classed offshore supply vessel available today." The HOS Centerline is the only vessel in the world to have received certifications by the United States Coast Guard allowing operations as a supply vessel, industrial/construction vessel and as a petroleum and chemical tanker.

The HOS Centerline was added to Hornbeck's fleet in February 2009 and achieved its multi-certifications under Subchapters "L', "I", "D" and "O" in October, 2009. Her sister-vessel, HOS Strongline will join the fleet in early 2010 and is expected to receive the same regulatory pedigree. Both vessels will be based at the company's shore base facility, HOS Port, located in Port Fourchon, Louisiana. The company acquired the HOS Port facility and its heavy lift capabilities in order to accommodate its growing fleet of large dimension vessels, including the HOS Centerline and HOS Strongline.

The two HOS 370 vessels are the result of a conversion program that involved the retrofit of two coastwise-qualified molten sulfur tankers into multi-purpose supply vessels (MPSVs). Originally Hornbeck expected delivery of the converted vessels by the end of 2006.

The HOS 370 vessels have the capacity to transport more than 30,000 barrels of liquid drilling mud and fuel to and from exploration, development and production projects. Positive displacement pumping systems allow the vessels to provide a consistent transfer of product even at installations with large air gaps.

The HOS Centerline has a self-contained mixing and cleaning system that reduces the risk of drilling fluid collapse as well as the time necessary to clean storage tanks, which is a cost normally borne by its customers. Mud mixers utilize low inertia paddles to reduce the fall-out of the mud and provide for a consistent mix. The vessel's significant size, 8,400 kw of available propulsion, power and DP-2 capability allows it to continue cargo transfer operations during sea and weather conditions that prevent smaller vessels from working.

With its subchapter "D" and "O" certifications, the HOS Centerline can carry crude oil as well as other flammable and combustible cargoes in significant quantities from offshore drilling and production sites.

The HOS 370 vessels offer 18 tanks with three separate segregations that allow the transport of three separate products at the same time. This feature makes the vessel an excellent platform for various well test, flow-back and dewatering projects in deepwater and ultra-deepwater.

The vessel can also be utilized for emergency export of crude oil and other fluids during times of or following disruptions, such as hurricanes.

The HOS 370-class cargo deck dimension is 240 feet x 58 feet (1,287 sq m) and is complemented by an additional 30 ft x 58 ft of covered deck space, unparalleled in the industry. The vessels have multi-functional ISO sockets integrated into the bow to accept standard sized containers to increase loading productivity and eliminate the use of traditional chains and binders.

The HOS Centerline has accommodations for up to 78 personnel, in excess of the vessel's crew. The large deck and ample quarters provide an excellent platform for subsea construction operations.

HOS CENTERLINE

<HOS CENTERLINE>

marine log logo

WORLDWIDE METRIC

NAUTICEXPO

DELTAT

RETLIF

EVAC