Subsea Rock Installation at 1364m Sets New Record for Van Oord - Video – Heavy Lift News
15 May 2023

Subsea Rock Installation at 1364m Sets New Record for Van Oord – Video

Van Oord’s flexible fallpipe vessel Stornes has set a new world record. The vessel carried out subsea rock installation works in a record water depth of 1.364 meters. A distance comparable to almost five times the length of the Eiffel tower! The Subsea Rock installation works were executed in relation to the development of the Sangomar field in Senegal.

Subsea7 contracted Van Oord to install 262.000t of rock in water depths ranging from 800m to the record depth of 1.364m for the stabilisation and protection of subsea infrastructure. The Sangomar field is located approximately 100km south of Dakar. Due to the remote project location, the rock is supplied to the vessel by a ship-to-ship transfer method.

The fallpipe through moonpool has an installation depth up to 900m, expandable to 1,500m


Rob Bakker, Operations Manager at Van Oord, “With this record Van Oord strengthens their position as market leader for SRI, both in accuracy, efficiency and depth.”

Van Oord has led the market in subsea rock installation for more than thirty-five years, servicing the offshore and offshore wind industry in  pre- and post-lay rock installation on pipelines and cables, scour protection installation, seabed preparation and ballasting services for offshore structures. Their dynamic positioning flexible fallpipe vessels are equipped with a unique flexible fall pipe system and Remote Operating Vehicles (ROV). Van Oord has developed a system in-house to install rock precisely and efficiently at greater water depth. This is an unique system giving Van Oord the ability to reach this record breaking water depth. Van Oord is the only subsea Rock Installation Contractor ever to reach this water depth and is determined to remain the record holder for deep water SRI.


Feature Title photograph

The record breaking flexible fallpipe vessel Stornes



Source Van Oord

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