Shipyard De Hoop will design and build ten Platform Supply Vessels (PSVs) for Abu Dhabi National Oil Company (ADNOC).
ADNOC issued the invitation to tender at the beginning of 2013, following technical prequalification. The group of tenderers was reduced to a shortlist of candidates from different nationalities from which De Hoop was selected.
Offshore Oil and Gas Fields
The first vessel is to be delivered early 2015, whilst the delivery of the other nine vessels is equally spread over almost 1,5 years, with the last PSV to be handed over at the end of 2016. The complete production of the ten vessels will be split between the two shipyard locations of De Hoop, Lobith and Foxhol. The vessels will operate in the offshore oil and gas fields of the United Arab Emirates, under the operating company ESNAAD, which is a member of the ADNOC Group.
Highest DNV ERN Score
These ships measure 65 x 15.8 metres (L x B). The PSV design will have the highest possible DNV Environmental Regularity Number (ERN) score of quadruple 99. This represents the highest score in optimal use of all thrusters and the effect of a single-thruster failure or the worst-case single failure(s).
Ship Propulsion and Power
The diesel-electric propulsion system of the vessel consists of two azimuthing thrusters in the stern and two bow thrusters. The hull form below the waterline is optimised to reduce drag, allowing for a transit speed of 13 knots at lowest possible power (2500 kW), whilst the shape above the waterline is designed to obtain a very low drag coefficient (Cd), thus reducing the power requirements in DP-mode considerably.
The vessel will have three generator sets of 1600 kW each, driven by medium speed diesels, to power the propulsors and other consumers. The high level of redundancy guarantees the vessel remains fully operational, even with one complete generator set out of service.
DP2
The PSV will be kept on station with a dynamic positioning (Lloyd’s Class DP(AA)/DP2) system, when carrying out (un)loading operations around offshore drilling rigs or production platforms.
Low Noise and Vibration Levels
The PSVs will receive CAC3 class notation for low noise and vibration levels required by Lloyd’s Rules for Crew Accommodation Comfort. The forward located superstructure offers accommodation to 28 people in single-berth or two-berth cabins with en suite bathrooms. The accommodation is spacious with optimised air treatment and other features to provide the crew with a high level of comfort.
Furthermore the accommodation consists of ample office spaces, mess rooms, day rooms, galley, laundry and stores. To facilitate the Islamic worship, a prayer room will be provided.
360 Degree Enhanced Visibility
The full width navigation bridge, with a 360 degree enhanced visibility, comprises an extensive package of nautical, navigation and communication equipment. The bridge wings are enclosed and each have a navigation console containing all relevant controls from which the vessel can be operated.
Although this series of vessels are primarily designed for offshore supply purposes, they can also serve as a basis for a wide array of other offshore support services, such as stand-by services and fire fighting.
Principal Particulars
- Nationality: United Arab Emirates – Abu Dhabi
- Length, over all: 65.00 m
- Beam, moulded: 15.77 m
- Depth, moulded: 6.00 m
- Draught, Summer: 4.85 m
Tank capacities
- Fresh water: appr. 400 m³
- Fuel oil: appr. 640 m³
- Drilling water: appr. 930 m³
- Liquid mud: appr. 550 m³
- Dry bulk: appr. 200 m³
- Working deck space: appr. 475 m2
- Complement: 28 persons
- Propulsion plant: Diesel-Electric Propulsion
- Generator power: 3 x 1600 kW
- Main thrusters aft: 2x 1250 kW
- Bow thrusters: 2x 640 kW
- Classification: Lloyd Register of Shipping: ✠ 100 A1, Offshore Supply Ship / Stand-by Ship / Fire-Fighting Ship 1 (2400m³/h) WDL (5t/m²), *IWS, CG, ✠ LMC, UMS, NAV1, IBS, DP(AA), PCR (99)(99), IHM, CAC3, ECO (BWT, CRM, IHM, OW)
- Descriptive notation: Green Passport
