Yno 233 - Western Patriot

Yard no 233 built 1993 by Ulstein Verft AS, Norway for Western Atlas International Inc., Houston, USA.

Yno 233 Western Patriot

The vessel is designed by Ulstein International AS in close cooperation with Western Geophysical, and is excuted by Ulstein Verft AS as yard no. 233. 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.

2017: Still active - IMO 9050448 Manager and owner: Westerngeco, London, UK. Flag: Panama

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

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: 20 m3 
Work deck area (Main deck): (8000 sq.ft) 740 m2 
Recording room area: 200 m2 
Helideck AS 332 Super Pumpa. CAA/DnV

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

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

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)

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): Skanti TRP 8750 Duplex SSB MF/HF, 750 watt 
Thrane & Thrane TT3200 Radio Telex System 
Sailor RT2047 radiotelphone, simlpex and duplex operation 
Skanti VHF radiotelephone TRP 3000 simplex/semiduplex 
Skanti TR6102 areonautical AM/VHF 
Skanti DSC VHF radio, TU 3000/XH 5131 
Ships Navigation: Robertson Gyrocompass RGC 11 
Robertson disc navigation system ECDIS 
Robertson AP9 MKII Autopilot 
Furuno FSN-50 Transit Satelite receiver 
Furuno GP500 GPS Satelite receiver 
Furuno LC 90 MKII Loran C navigator 
Furuno FD 527 VHF Direction Finder 
JMC MF/HF Direction Finder, DR-230 
Furuno FE 680 Echo Sounder - Range to 2100 metres 
Furuno Fax 208A Weather facsimile 
Ben Marine Electronmagnetic Log 
Thrane & Thrane standard C inmarsat (telex) system TT 3000 C