ROVworld Subsea Information

Subsea 7's Seven Atlantic launched at Merwede Shipyard
Date: Friday, August 01, 2008 @ 15:00:00 EDT

Subsea 7's Seven Atlantic launched at Merwede ShipyardOn Friday 18 July 2008 Diving Support Vessel Seven Atlantic was launched at the IHC Merwede yard in Hardinxveld Giessendam, the Netherlands. The vessel is under construction for Subsea 7, one of the world's leading engineering and construction companies. Before launch the Seven Atlantic was named by Mrs. Hanne Reymert, wife of Mr. Didrik Reymert, Project Engineering Manager, EP Europe, Shell UK Limited.

The Seven Atlantic has been designed by Merwede Shipyard in close liaison with Subsea 7 and the dive spread manufacturer. It is a fully Dynamic Positioned Diving Support / Offshore Construction Vessel, suitable for worldwide operations.

The introduction of this DSV to the market will provide Subsea 7 with one of the most versatile and advanced diving vessels currently available.

Principal characteristics

Length over all approx.: 141.55 metres
Length between PP, on design draught: 128.96 metres
Breadth moulded: 26.00 metres
Depth maindeck mld.: 12.00 metres
Draught design mld.: 7.00 metres
Draught scantling mld.: 8.00 metres
Deadweight (incl. Payload) at design draught approx.: 7,815 Metric tons
Deadweight (incl. Payload) at scantling draught approx.: 11,000 Metric tons
Accommodation: 150 persons

The vessel has been built in accordance with the Rules and Regulations of Lloyd's Register, to obtain the following notation:

Lloyd's Register of Shipping ✠100A1, Diving Support Vessel, UD strength for load of 10t/m², Helicopter Landing Area, ✠LMC, UMS, DP(AAA), CAC(2), EP, ICC and further to the regulations of the Isle of Man Authorities.


Subsea 7's DSV Seven AtlanticThe vessel has been designed for saturation and air diving support work. The integrated saturated diving system is accommodated in the midships of the vessel and is suitable for a total capacity of 24 divers; 8 diving teams, each consisting of 3 divers. The dive system is designed for operations in water depths of up to 350 metres.

Twin air dive stations, twin observation class ROV deployment system are integrated in the vessel. In addition the vessel has an extensive Scale Squeeze system for well treatment and will be capable of carrying a 3000 ton carousel, work class ROVs and a twelve (12) metre long air diving daughter craft on the aft deck. A clear and useful deck area of 1200 m² and a 120t crane is provided.

The ship exceeds all current safety standards due to the fact the layout of the 6.6kV integrated electric power generation and propulsion system is for DP3 with triplicate redundancy. The ship has three electro-motor driven fixed pitch propellers in azimuthing nozzles aft. Two retractable Azimuth thrusters are fitted in the forward part of the vessel; one transverse thruster is arranged in a tunnel forward.

Photos of launching

Photo 1
Photo 2

This article comes from ROVworld Subsea Information

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