Frigstad A70 DP3

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The general arrangement of the unit has been carefully developed utilizing the extensive practical experience of the personnel at Frigstad Engineering and Frigstad Offshore. All aspects of functionality and placement have been carefully considered to ensure that each process is safe and efficient.

Optimized rig design & efficiency

500 POB LQ, upgradable to 800 POB
Large, well equipped recreational area's
Fully functional hospital with 6 beds and a large sick bay. Adjacent cabins can be converted to emergency hospital, adding 15 beds.
Prepared for 8 spread pre-set mooring system
6 x 3.8 MW Azimut thrusters w. tilted nozzles. Full DP3 capacity
Two deck cranes, 100 mT and 50 mTprovide coverage for all working area's of rig
CAP 437 comliant Helideck w 15.6 mT landing weight
High payload capacity (5,000mT)
Telescopic personal transfer bridge. 38,5 m reach, with automatic lift off feature.
6 diesel engines w total installed power of 29 MW.
Closed Ring system providing flexibility in operation and minimizing running cost.

Images

Outline Specification

REGULATIONS

SOLAS 1974 as amended, MARPOL 1973/78, IMO MODU-CODE 2009, all with latest amendments

CLASSIFICATION

DNV +1A1 COLUMN STABILIZED ACCOMMODATION UNIT, POSMOOR( ATA) optional, DYNPOS AUTRO (DP3), CRANE, HELDK, ECO, F-AM, and BWM-T, FIRE FIGHTER II or equal to ABS

ENVIROMENTAL OPERATING LIMITS

Maximum wind velocity 70 knots / 100 knots

Wave height Hs 15.8 m (51.83 ft)

Air gap (Operating/Survival) 8 m /12.5 m (26.25/41.01 ft)

PRINCIPAL PARTICULARS

Length of pontoons 86 m (282.15 ft)

Width & length, pipe rack deck 70 x 69 m (229.66 x 226.38 ft)

Height to pipe rack deck (ABL) 36.8 m (120.73 ft)

Draft (max. operational) 20.0 m (65.62 ft)

Draft (survival) 15.5 m (50.85 ft)

Displacement (operational) 32,710 t (36,056 st)

Displacement (survival) 29,390 t (32,396 st)

Displacement (transit) 24,320 t (26,808 st)

Water depth (max) unlimited

Drilling depth (max) NA

STORAGE CAPACITIES

Potable water, pontoon 2,310 m³ (14,529 bbls)

Open pipe rack deck area 1,515 m2 (16,307 ft2)

Diesel fuel oil, pontoon 2,950 m3 (18,555 bbls)

Variable deck load (max oper.) 2,500 t (2,756 st)

Variable deck load (max transit) 1,000 t (1,102 st), excl. chains in chain locker

Payload (max operational) 5,000 t (5,512 st)

ACCOMODATION, OFFICES AND RECREATION

Air conditioned living quarters for 500 persons in single and double berth cabins with private sleeping area. Accommodation is upgradable to 800 persons by converting some double berths cabins to 4 berths cabin. All cabin are en-suite with bathroom.

One (1) spacious Hospital with four (4) beds sick bay, fully equipped treatment room. Additional fifteen (15) more beds may be added to the hospital capacity in emergency situation

Galley, Provision Store, and Mess Room are designed to cater up to 800 POB. The Mess Room is designated as an emergency refuge room

One (1) large change room on pipe rack deck adjacent to the coffee shop can also be used as seating during coffee break. This will increase the coffee break seating capacity to more than 200 seats.

There are three (3) smaller changes room for Catering staff, Engine crew & Ladies.

One (1) 20 seats Conference Rooms, One (1) large Oil Company Office with four (4) glass-partitioned office for eight (8) workstations and a meeting/discussion area. Additionally, lot of offices for marine crew and third party vendors.

One (1) Helideck with D-value of 25m and MTOM of 15.6 t and an adjoining Helideck Apron capable of holding helicopter of 25m D value

Recreation / Internet Café, Game Room, Cinema, Sauna, Coffee Shops, Gymnasium, and Helicopter Waiting Room with 40 seats

WORKSHOP & FABRICATION SHOP

Covered Pipe & Plate fabrication Shop, Painting & Blasting Shop, and Paint Store with total area of 254.3 m2

MATERIAL HANDLING

Deck cranes One (1) 100 t pedestal deck cranes with 57 m main boom and 62m auxiliary boom One (1) 50 t pedestal deck crane with 51 main boom and 56m auxiliary boom

Telescopic Gangway One (1) telescopic gangway with 38.5m operating length at midstroke +/- 8.0m

MARINE SYSTEMS

Main power / emergency power Six (6) diesel generators. Total installed power is approx. 29,040 kW. One (1) dedicated Emergency generator with an output capacity 1,200 kW.

Thruster 3.8 MW azimuth thrusters with tilted nozzle and propeller

Mooring system Four (4) double drum windlasses with eight (8) underwater fairleads for preset mooring, optional thruster assisted mooring. Upgradable to 12 point mooring.

OTHER

Helicopter deck capacity Designed for MI8 and EH 101 helicopters.

Life-saving equipment Eight (8) davit launch fully enclosed lifeboats Forty (40) inflatable life rafts with capacity of 25 persons each. Two (2) fast rescue/workboat boats.

Frigstad A70 - Design Brochure
(pdf, 1.1MB)

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