IRM Offshore and Marine Engineers Private Limited offers Rubber made Keyhole Boat Fender. IRM Offshore and Marine Engineers Private Limited is an ISO 9001:2000 and ISO 14001:2004 accredited company. The Rubber made Keyhole Boat Fender is a bow stem Fender used on the Tugs, Boats and small Port Crafts and Ferries. The Keyhole Boat Fender provides maximum protection to the Tugs and Ferries by its typical profile and load absorbing capabilities.