A new Voith tractor tug, 'Ansar 20' was recently delivered from NGV Tech, Malaysia, to Bakri Navigation for service in Saudi Arabia.
This new design, designated by Robert Allan, Canada, as an AVT 30/35 Class tug, is suitable for a wide range of duties including line tug operations, harbour towage, hose handling, and ship-handling.
Its main duties for Bakri Navigation will be assisting tankers in mooring and connecting cargo hoses at single point mooring terminals.
'Ansar 20' has a length of 29.7 metres, a moulded beam of 11.5 metres, a moulded depth of 4.4 metres and a maximum draught at 150DWT of 4.8 metres.
Classed by Bureau Veritas, the vessel performed fully to expectations during trials, achieving a mean bollard pull in excess of 35 tonnes, and a free-running speed of 13 knots.
Features of the AVT 30/35 design include a full-height raised forecastle running nearly half the length of the tug to provide a high standard of accommodation and a good sea-keeping capability for operation in exposed conditions.
The 'Ansar 20' has been outfitted to high standards for a crew of up to 15 persons. Main propulsion for the 'Ansar 20' comprises a pair of Caterpillar 3512B HD diesel engines, each rated 1,350kW at 1,600rpm. Each engine drives a Voith model 26GII/165 AE 45 cycloidal drive unit in tractor configuration.
The electrical plant comprises two identical diesel gensets, each with a 440volt / 60 Hz. power output of 215ekW.
The main hawser winch aft is a single drum type, containing 300 metres of high-performance UHMWPE towline. The winch is supplied by an electro-hydraulic power pack with 50 percent redundancy.