2 SISTER ROBERT ALLAN DESIGN ASD TUGBOATS FOR SALE - NEVER BEEN USED SINCE BUILT

"Sister Robert Allan design ASD tugboats - never been used since built" refers to a pair of identical or nearly identical tugboats that are designed by Robert Allan Ltd. and have not been used or put into service since their construction. ASD stands for Azimuth Stern Drive, which is a type of propulsion system commonly used in tugboats.

Robert Allan Ltd. is a renowned naval architecture and marine engineering firm based in Canada, specializing in the design of commercial vessels, with a particular focus on tugboats and workboats. The company is known for its innovative and reliable vessel designs, which are widely used worldwide.

ASD tugboats are equipped with azimuth thrusters, which are fully rotatable propulsion systems that provide excellent maneuverability, making them well-suited for tasks such as ship handling, towing, and escort operations in ports and harbors.

When a pair of tugboats are referred to as "sister" vessels, it means that they have been designed and built to the same or similar specifications and share many common features. This can include hull design, propulsion system, deck layout, and other equipment.

If these sister Robert Allan design ASD tugboats have never been used since they were built, it could mean that they are available for sale or lease as new vessels. Potential buyers or operators may find these tugboats attractive, as they can benefit from the proven design and performance of Robert Allan tugboats without having to wait for a new vessel to be designed and constructed. Additionally, since these tugboats have not been used, they should be in excellent condition with no wear or maintenance issues, offering a cost-effective and reliable solution for those in need of such vessels.