Ulstein unveils shallow water construction vesselVessel & ROV News // October 13, 2015
The S182 is designed to be an economical multipurpose vessel.
Ulstein Group in Norway has unveiled the Ulstein S182, a newly-developed, dynamically positioned multipurpose construction vessel suitable for shallow water operations.
The company said the main design driver was to develop a very CAPEX-friendly DP vessel with good capabilities to support various offshore operations, including cable lay and offshore construction.
The vessel combines a large deck area with accommodation and station keeping capability. It is suitable for a wide range of operations, including:
• Cable laying
• Offshore construction
• Shallow water installation
• Dive support
• Rock installation
• Salvage works
"The mooring and DP2 (optionally DP3) stationkeeping capability, in combination with the endurance and adequate transit speed, ensure that the S182 can operate autonomously in remote shallow water and offshore areas," said the company.
“Given the CAPEX target that we have set ourselves, we decided that speed will be a result of the design rather than a design driver as it is in most designs,” said Edwin van Leeuwen, Managing Director at Ulstein Design & Solutions BV. “Speed requirements often have a big impact on installed power, easily driving up CAPEX.”
Ulstein said it has been able to develop "a very versatile workhorse" that is capable of shallow water DP operations (@ 4.5m draft) including beaching. The vessel has a large, strengthened work deck able to accommodate a 30m diameter carousel, large cargo hold below deck and circa 10,000 deadweight.
An offshore crane of up to 400 tonnes can be located in the side of the vessel, and there is a passage way below the main deck created between the aft casings and accommodation, so that personnel can avoid having to cross the open work deck.
“We are mainly target Southeast Asia, the Middle East and Africa, but the vessel will of course also be capable to work in the North Sea, where we see a good market for cable lay operations," said Ulstein.
The S182 has a length overall of 115.4m, beam of 30.8m, depth of 8.4m draught (operational) of 5.0m. The vessel's speed is 9 knoys, with installed power of 2 x 2,880kW and 2 x 1,920 kW.