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Brazilian yard building three Incat Crowther DSVs

Written by Nick Blenkey

Sistac 340AUGUST 8, 2013 — Three 42.5 m monohull dive support vessels under construction for Brazil’s Sistac – Sistemas de Acesso S.A. -  at the SeaSafe Barcos Manufaturados shipyard in Angra do Reis are being built to a design by Incat Crowther.

Incat Crowther say the design has been developed from stem to stern to be a dedicated DP-2 capable Dive Support Vessel, featuring fully integrated ROV launch and recovery, dive compressors and decompression chamber.

The first of the trio, to be named Sistac Vitória, is due to be delivered in the first quarter of 2014.

Sistac 500The aft deck will feature a large working deck, which will house the ROV crane and reel, a pair of dive platforms and two deck cranes. Inside the main deck house are functional areas such as toilets and showers, dive shop (housing compressors and decompression chamber) and ROV shop.

Forward of these spaces are an office, TV room, meeting room, mess areas, and two single-berth cabins for senior personnel and a designated officer cabin.

A spacious wheelhouse is located upstairs, with forward and aft facing vessel control stations, ROV and dive control workstations. Overhead windows are fitted both fore and aft for high-angle visibility.

Below decks are accommodations for the remaining 33 crew members, in a mix of two-, thre- and four-berth cabins.

All accommodation cabins have ensuite bathrooms.

Four Scania D13 main engines, each producing 410 kW, will power the vessels, which will have a service speed of 13 knots and a top speed of 15 knots.

The DP-2 capability ensures the vessel can hold station in the event of a failure in any single component of the system, enhancing both safety and reliability.

As well as being efficient, the vessel’s new-generation hull form will endow it with excellent seakeeping characteristics, enhancing the functionality of the vessel in offshore operations.

Length Overall 42.5 m
Length Waterline 38.5 m
Beam Overall 9.3 m
Draft (hull) 1.85 m
Draft (prop or max) 1.85 m
Depth 4.25 m
Construction Marine grade aluminum

Fuel Oil 112,000 liters
Fresh Water 20,000 liters
Sullage 3,000 liters
Personnel 36

Speed (Service)13 knots
Speed (Max) 15 knots
Main Engines 4 x Scania D13 Power 4 x 410 kW @ 1800rpm
Propulsion 4 x Hamilton Water Jets
Generators 4 x Scania Dl13

Flag Brazil
Class / Survey Normam-01/RINA

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