The Yemen Port Authority fleet at Aden have taken delivery of bollard pull Tug “Wadi Hassan” built by Damen Shipyard in The Netherlands. Each of the Azimuth Stern Drive (ASD) tugs has two propellers that can rotate through 360 degrees to give tremendous manoeuvring ability ahead, astern and sideways. This tug, and her sister vessel “Wadi Hateeb” due to complete trials in Holland next week, are an important addition to Aden’s towing capacity. The numbers of tankers, bulk carriers, container ships and other vessels calling at the port has more than doubled since 1995 and the total tonnage of ships calling has trebled over the same time. Towage capacity was becoming a limiting factor at the port.