Svitzer Stanlow arrived in the River Mersey after a gruelling delivery voyage from Singapore just a few days before its formal naming ceremony on the 7th of Construction and fitting out by ASL was carried out to meet the standards of Lloyds Register class; + A1, Escort Tug (//10/30), LMC, UMS, IWS, FiFi1. High-end ASD tug for sale – 70tbp. Ref No: T Type: ASD tug. Built: Class: IACS, Fifi 1. Bollard pull: 70t. Dimensions: 31 x 11 x m (draft). Power: bhp. Propulsion: Azimuth stern drive. Winches: Fore and aft. Notes: Shallow draft ASD with escort notation. Deck crane. Accommodation for 6. Contact us to find. 19 Apr BHP Billiton has taken delivery of two escort tugs to support its iron ore operations in Western Australia. Iron Kestrel and Iron Corella have commenced operations in Port Hedland after being delivered by ASL Shipyards in Singapore. These are RAstar class escort tugs designed by Robert Allan Ltd. The.