224' Seismic vessel - UT 743 design

The vessel is designed by Ulstein International AS in close cooperation with Western Geophysical, and is excuted by Ulstein Verft AS as yard no. 234. The UT 743 design is developed in accordance with the demanding requirements for silent operation at high capacity production. The vessel features a compact and efficient layout, providing a comprehensive arrangement of mechanical and electronic seismic outfitting, and a highly flexible, redundant and powerful propulsion and
machinery package.

The vessel is built to Det norske Veritas Class + A1, Ice-C. E0, Heldk., and to international rules and regulations as applicable for the subject type of vessel. Further the vessel satisfies IMO Res. A 468 (XII) as a general maximum noise level in laboratories and related areas. Special consideration has been taken from design stage and through out the building program in order to minimise hydroacoustic noise generated by the vessel. All major roating machinery installations are resiliently mounted, and vibration characteristics of the steel structure and hull is made without interference from machinery and propulsion plant.


MAIN DIMENSIONS
Length over all: 78 m
Length between p.p.: 67 ,7 m
Breadth, moulded: 17,0 m
Dept Main Deck: 7,6 m
Design draught: 5,4 m
Scantling draught: 5,9 m

TONNAGE & CAPACITIES
Gross Tonnage (1969) approx.: 3700 GRT
Fuel oil (Ex.sys.tks.) approx.: 1400 m3
WB approx.: 850 m3
FW approx.: 220 m3
Cable oil, clean oil: 20 m3
Cable oil, dirty oil: 20m3
Work deck area (Main deck): (8000 sq.ft) 740 m2
Recording room area: 200 m2
Helideck AS 332 Super Pumpa. CAA/DnV

ACCOMMODATION
Accommodation 56 persons in total, of which:
- 18 one-man cabines
- 18 two-man cabines
- 1 two-bed hospital

PERFORMANCE
Trial Speed (4,5): 15,6 knots
Design pull, 5 kn: 30 tonnes
Max.pull, 5 kn: 50 tonnes

TECHNICAL DATA
Bergen Diesel, main engines: 2 x BD 32 M& each of 3300 BHP at 750 rpm.
Ulstein Propeller: Twin screw propulsion comprizing: 2 x 1500 AGSC controllable pitch propulsion plants, each with: Low noise, 4-bladed secwed CP-propeller, driven through a reduction gearbox with two-speed PTO for shaft generator.
Ulstein Propeller, bow thruster: 150 TV, 590 kW/800 HP, el.driven.
Ulstein high lift rudders: 2 off
Shaft generator: 2 x 2000 kVA, 450 V, 60 Hz
Aux.generator: 1 x 1338 kVA, 450 V, 60 HZ, driven by one
Caterpiller 3512 TA, diesel engine, rated at 1125 HP at 1800 rpm
Clean power: 2 x 73,6 kVA, 208 V, 60 Hz, SCFM, 2000 psi, driven by Caterpiller 3516 Diesel engine.
Life boats: 2 x 48 persons enclosed.
Life rafts: As per Solas
MOB boat: 1 x Seabear 23, with inboard diesel. Davit deployed.
Work boat: 1 x Seabear 23, with inboard diesel Davit deployed.
Norwinch Windlass: Type AV-33/38-36 K3

Ulstein Maritime Electronics:
Switchboards.
- Electronic remote control system
Main Propeller (PROCON)
- Joystick control system (POSCON)
- Electronic remote control system
- Bowthruster (SITCON)
- Bridge control consoles
- Engine room console
- Starters (for el.motors)
- El.test board
- Engine room telegrahp
- Microprocessor based alarm system with dead man system and printers)

ELECTRONIC EQUIPMENT
Radar: Furuno FAR-2822/XBand, ARPA - 120 NM Ranger x-band (3 cm), ARPA, 72 miles
Radar: Furuno FAR 2830S, SBand ARPA-96 NM Range
Innmarsat: JRC JUE 45A MKII Voice/Telex/Fax

Radio /to GMDSS Requirements):