Damen-Wilson Sons

Brazilian shipping firm Wilson Sons has delivered two Damen-designed platform supply vessels (PSVs) to Wilson Sons Ultratug Offshore (WSUT) for the Brazilian offshore market.

The two vessels are part of the six PSVs to be delivered to WSUT and are built to the PSV 4500 design licensed by Wilson Sons.

The remaining four PSVs are scheduled to be delivered by 2013 to WSUT, a joint venture between Wilson Sons and the Chilean group Ultratug.

Upon delivery all six vessels will be chartered to Brazilian oil company Petrobras for offshore oil and gas work.

All the 4,500dwt vessels will have a length of 87m, width of 16m and a maximum draught of 16.9m, and will provide deck area of 840m².

The PSVs will be equipped with a diesel electric propulsion system including four Caterpillar 3512C generator sets, each of 1,570 kW at 1,800rpm, and two Rolls-Royce azimuth thrusters of 2,500kW.

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Capable of accommodating a crew of 14 people and up to six passengers, the PSVs will be equipped with fixed-pitch propellers of 2,800mm diameter to achieve speeds of up to 13 knots.

Each vessel will have a dynamic positioning DP2 classification and will be equipped with a Caterpillar C9 genset of 238kW at 1,800rpm for emergency use.

Wilson Sons has built around 16 Damen PSVs so far, in addition to its fleet of azimuth stern drive (ASD) tugs for its own fleet.

Damen is currently designing a new range of PSVs and analyses are being carried out based on feedback and studies of the Damen PSV 3000, 4500 and other non-Damen PSVs operating in the area to refine the specifications of the new design.

Damen, in collaboration with Wilson Sons, is developing several other vessel types for the Brazilian offshore market, like anchor handlers, ROV support vessels and well-stimulation vessels.

Image: WSUT will charter six Damen-designed PSVs to Petrobras by 2013. Photo: Damen.