SPECIAL REPORT: IMR vessels support operations off West Africa

Patrick BelenfantBourbon Subsea ServicesMarseilles, FranceInspection, maintenance, and repair (IMR) vessels have provided operational support off West Africa for such work as installation of jumpers and the maintenance and installation of subsea trees.The Bourbon Trieste is a DP2 multipurpose vessel with a single active heave compensated crane (Fig. 1).In Bourbon's case, since 2004, the company has installed 215 subsea connections in deepwater blocks off West Africa using its own IMR vessels. It currently has four vessels operating off Angola and two off Nigeria. Figs. 2 and 3 show two of the vessels.The Bourbon Oceanteam 101 is a DP2 multipurpose vessel with two active heave compensated ...

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