B 843
PRINCIPAL PARTICULARS
Length overall 45.10 m
Length, waterline 42.34 m
Breadth moulded 8.00 m
Depth to main deck 3.60 m
Depth to upper deck 5.80 m
Draught, summer 2.00 m
Draught, winter 2.10 m
Ice breaking capability 0.60 m
Class
DNV +1A1 ICE 1B DAT (-30°C)
COMPLETMENT
Crew 2
Evacuees seated 328
Evacuees (stretcher-borne casualties) 10
PROPULSION / POWER SYSTEM
Type Diesel-electric
Output power 2 x 800 kW at 1500 rpm
Azimuth thrusters 2 x 550 kW at 1500 rpm
CAPACITIES
Fuel oil 9,5 m3
Water Ballast/ Auxiliary Cooling Water 25,0 m3
Potable Water 4,2 m3
Sewage /Grey Water 1,0 m3
NAVIGATION AND COMMUNICATION
GMDSS Sea area 3 Radio Station
On 22nd of July 2005, Gdansk Shiprepair Yard "Remontowa" S.A. and Agip KCO signed a contract for the construction and delivery of four specialised Ice Breaking Emergency Evacuation Vessels (IBEEV), becoming yard numbers B 843/1-4. First generation of IBEEVs was followed by technically upgraded pair of two sister vessels (YN B 843/5-6). At the moment the shipyard is focused on construction of third generation quartet (YN B 843/7-10).
The vessels are used to carry out the emergency evacuation of personnel from offshore installations located in the Kashagan Field, which is currently one of the largest offshore developments in the world (and which forms part of the Kazakhstan Economical zone).
Original concept was prepared by Robert Allan Ltd. and shipowners, whilst development of technical design and provision of workshop drawings of the vessel is responsibility of Remontowa's subsidiary Naval Engineering & Design Ltd.
IBEEV represents state-of-the-art technology and complies to DNV notation m1A1 ICE 1B DAT (-30° C).
IBEEV measures 45,10 m in length, 8,0 m in beam and 3,60 m in depth. The specific requirements of Agip KCO as well as the onerous environmental operating conditions have challenged the Yard to develop tailor made solutions for this project.
Special focus has been put on the development of the propulsion solution, allowing the vessels to operate safely within a toxic/ hydrocarbon environment. Combustion air is provided by a specialized installation consisting of 16 high pressure cylinders storing air compressed to 350 bar, decompressed via pressure reducing panels and supplied to the engines. IBEEVs has diesel electric propulsion, consisting of two 800kW diesel-electric prime movers running at 1500 rpm and driving twin azimuth thrusters rated at 550 kW at 1500 rpm. The winter ice conditions prevailing in the North East Caspian resulted in the designers developing a hull form with the capability for vessel operation in 'first year' ice (0.6 m thick), which was proved by extensive model tests. The shallow waters of Caspian Sea also required tight design control over draught of the vessel, which do not to exceed 2,0 m in summer and 2,1 in winter conditions. Environmental factors were also taken into account, resulting in the application of "no discharge" equipment and fulfilment of requirements of MARPOL as well as other International Conventions.
IBEEV has been designed to evacuate 340 persons at a time. Evacuees will enter the vessels through evacuation tunnels linking each vessel to the Kashagan'D'-Island facility. Evacuees will enter the vessel via an air lock which will be purged using stored air from cylinders, afterwards the evacuees will proceed forward through the vessel, to one of three hermetically sealed evacuee compartments. During evacuation, personal CO2 scrubbers and re-breather sets will be provided to each of the evacuees. Solid-state chlorate candles will be used to generate additional oxygen in the evacuee compartments as the oxygen levels are depleted by the evacuees.
Whilst first six vessels in series operate successfully at D-Island, construction of next four vessels has started, with expected delivery in summer/autumn 2009.