Various Offshore Vessels Used For Specific Purposes In Maritime

Various Offshore Vessels Used For Specific Purposes In Maritime
3 min read
20 June 2023

This blog post gives a vivid picture of the various offshore vessels navigating the waters, for performing various minor and major jobs. So, let’s jump straight into the world of maritime vessels.

Accommodation Vessels

Accommodation Barges are essential components of the offshore industry. When a rig or platform is unable to accommodate all of the offshore personnel, these shallow draft vessels are moored near to the offshore sites to offer other lodging options.

Nowadays, the barges are typically furnished with maintenance equipment and cranes, allowing them to carry out some offshore construction work as well. But modern AWBs may also have a bar, a movie theater, a gym, conference rooms, and a lobby for meetings in addition to a swimming pool. So it's not all work and no play.

Cable Laying Vessel

Cable Laying Vessels offered by offshore vessel companies are the clearest example of how offshore industry is not just dependent on oil and gas. They are created specifically to lay underground cable networks.

Imagine how dependent you are on this form of communication that it would be economically wise to construct enormous vessels specifically for the installation of cables.

To ensure the highest efficiency the main and auxiliary umbilicals can often be laid simultaneously using cable layers. They also have hydraulic and pneumatic cable laying systems, as well as a powerful DP system.

Diving Support Vessel (DSV)

DSVs are frequently among the most technologically advanced offshore vessels nowadays. They serve as a base for diving specialists that maintain or inspect mobile platforms, rigs, pipelines and their connections, well-heads, etc. underwater.

Therefore, a moonpool (an open area in the middle of the ship where divers and ROV activities begin) and recompression chamber are typically installed on a DSV. Additionally, due to safety considerations, Diving Support Vessels are always equipped with a DP3 class positioning system.

Crew Transfer Vessel

Crew boats are the offshore vessels utilized for the transportation of personnel and consumables (water, gasoline) when the offshore site is located within 200 nautical miles (370 km),

The size of these boats offered by offshore vessel companies can range from small 30- to 60-foot (9.1 to 18.3 m) boats to large 200-foot (61 m) ships that can carry up to 100 maritime specialists. Crew boats typically have a crew of 4–5 seafarers and can travel at a speed of about 33 knots.

The catamaran Muslim Magomaev, completed in 2015, is today the largest crew boat in the world. It sports a 70-meter total length and a top speed of 38 knots.

Jack Up Rig

Jack Up drilling platform is rightfully regarded as one of the most convenient Mobile Offshore Drilling Units (MODU) in the industry. The first mobile unit for Humble Oil was created in 1954 by Leon B. DeLong and McDermott, ushering in the era of jack ups. It had 10 legs made of spud cans and was called DeLong-McDermott No. 1.

Since then, jack ups have evolved into technological marvels. Although they are currently easy to carry (often by AHTS or Heavy-Lifts) there are other self-propelled rigs available.

The Bottom Line

These are the various offshore vessels which are used for specific purposes in the maritime industry.

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