VESSEL REVIEW | E-TWO – Emar Offshore Services welcomes new harbour tug for African operations

TUG & SALVAGE WEEK
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Emar Offshore Services, a Netherlands-based maritime service company, has just welcomed a new vessel to its fleet. The Damen-built E-TWO was ordered in November 2018 with a special request for the installation of an additional FiFi1 system, aft winch and hydraulic crane.

The harbour tug will be deployed for assisting in the berthing and unberthing of industrial vessels in major ports. The owner wanted to be beyond compliance with stability regulations that will be applicable for tugs from 2020 onwards and IMO emission areas.



“This expansion of the fleet enables us to ramp up operations in Africa and fully establish ourselves as a leading marine services operator in the region,” commented Johan van Beek, Managing Director of Emar Offshore Services.

The design is an upgraded version of a popular Damen model with more than 200 vessels in operation, further optimised with features that include full compliance with the new stability regulations, a modular marine NOx reduction system and the Damen Digital Platform to maximise performance and reliability. Its improved power and manoeuvrability allow the vessel improved performance even in restricted waterways.


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Damen Digital is the gateway where all data from systems and equipment aboard the tug is channeled. This includes remote monitoring of fuel consumption and equipment performance.

The propulsion package comprises a pair of Caterpillar 3512C TA HD/D main engines with a total power of 3,804 bkW (5,102 bhp) at 1,800 rpm. These power Rolls Royce US 205 azimuth thrusters with a propeller diameter of 2,500 mm.

The E-Two is prepared for the SCR/IMO Tier III system, by reducing emissions, which is particularly important in urban areas, typical areas of operation for a tug. The owner has the possibility of easily upgrading the tug from IMO Tier II to IMO Tier III emission limits, simply by installing additional equipment.

The built-in heavy-duty slipping clutch enables full fire-fighting driven by the main engines, while still remaining in full control of the propulsion power and thrust to manoeuvre the vessel. This saves the requirement of a separate diesel engine and associated maintenance, or, in cases of connection with the main engine without this slipping clutch, compromised manoevrability.

Total firefighting capacity is 2,400 m³/h (FiFi 1). Fire-fighting monitors are located on the aft side of the wheelhouse, to ensure optimal visibility during normal ship handling operations.

The towing winch, located aft, is a hydraulically driven, two-speed winch with spooling device and warping head, for a pull of 40 tonnes at up to 8.1 metres per minute, slack rope speed up to 34 metres per minute, and 150 tonnes brake power.

A Heila HLM 20-3S crane, capable of lifting 1.7 tonnes at 10.56 metres, rounds out the primary deck equipment.

E-TWO is the fifth vessel Damen has supplied to Emar Offshore Services and is the fourth tug ordered directly by EMAR.

E-TWO is underway to China to collect her first tow, a new 75- by 25-metre flattop barge for EMAR named E-Barge 1. Purchased from Damen Concordia Shipbuilding, E-Barge 1 will be towed to the Middle East to be used on marine construction projects as part of the establishment of EMAR’s position in the region. A sixth Damen vessel is now under negotiation.

See all the other content from this month’s Tug and Salvage Week right here, including reviews, features, opinions and news.

E-TWO
SPECIFICATIONS
Type of vessel: Harbour tug
Classification: Bureau Veritas I + HULL • MACH Tug (Bollard pull = 65t) Unrestricted navigation AUT UMS Inwater survey Fire Fighting Ship 1 COMF-NOISE 3, COMF-VIB 3, Cert. GMDSS A2
Flag: Commonwealth of The Bahamas
Owner: Emar Offshore Services, Netherlands
Designer: Damen Shipyards, Netherlands
Builder: Damen Shipyards, Netherlands
Length overall: 28.58 metres
Beam overall: 11.43 metres
Depth at sides: 4.60 metres
Draught aft: 4.90 metres
Displacement (approx.): 512 tonnes
Gross tonnage: 299 tonnes
Main engines: 2 x Caterpillar 3512C TA HD/D, each 1,902 bkW ( 2,551 bhp) @ 1,800 rpm
Propulsion: 2 x Rolls Royce US 205 azimuth thrusters, 2,500mm dia. propeller
Forced ventilation: 29,000 m3/h
Generator sets: 2 x Caterpillar C4.4 TA, 230/400 V, 107 kVA, 50 Hz
Bollard pull ahea: 61.6 tonnes
Bollard pull astern: 59.4 tonnes
Speed ahead: 13.6 knots
Speed astern: 13.8 knots
Searchlights: 2 x Norselight SH470, each 2,000 W
Radar system: Furuno FAR 1518-BB
Compass: Cassens & Plath Reflecta 11
Autopilot: Simrad AP-70
Satellite compass/GPS: Simrad GN-70/HS80A
ECDIS: Furuno FMD-3200
Gyro compass: Anschuetz Standard 22 compact
Echosounder: Furuno FE-800
VHF radio telephone: 2 x Cobham Sailor 6222 (one with DSC)
VHF hand-held: 2 x Jotron Tron TR-20
UHF: Motorola DM4400
Navtex: Furuno NX-700B
AIS: Furuno FA-170
SSB: Furuno FS-1575
EPIRB: Jotron Tron-60S
Sart: Jotron Tron Sart20
Anemometer: Gill Instruments GMX500
VSAT system: Intellian t80W
Anchors: 2 x 360kg Pool (high holding power)
Anchor/towing winch: Hydraulically driven two speed winch with split drum and warping head, pull 31.5 t at 9.5 m/min, slack rope speed up to 41 m/min, 150 ton brake
Towing winch: Hydraulically driven two speed winch with spooling device and warping head, pull 40 t at 8.1 m/min, slack rope speed up to 34 m/min, 150 t brake
Towing hook: SWL 65 ton
Crane: Heila HLM 20-3S 1.7 t at 10.56 m + winch 2,150 kg
Fendering: D-fender at sides;

Cylindrical fender at transom corners;

Cylindrical and W-block bow fender with water spray

General service pumps: 2 x Azcue CA-50/3A 20.0 m3/h
Bilge pump: Megator L125 V-DBP
Fuel transfer pump: Azcue BR-41-10 12.0 m3/h
Fuel oil separator: Westfalia OTC 2-02-137
Fuel oil purifier: 2 x CJC PTU3 27/81 MZ-E2PWZ
Fresh water maker: Tecnicomar C2000
Cooling system: Box cooling + anti-growth system
Hydraulic system: 2 x main engine-driven pumps
Fifi set: 2 x main engine-driven pumps, 2,400 m3/h
Fifi monitor: 2 x 1200 m3/h, water/foam
Fuel oil: 83.6 m3
Fresh water: 14.0 m3
Lubrication oil: 2.3 m3
Dirty oil: 2.3 m3
Sewage: 7.4 m3
Bilge water: 4.9 m3
Foam: 9.8 m3
Accommodation: 6

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