Transport in the Isle of Man operational on 1 May 2007. The register is open to all non-commercial aircraft and is intended to be of particular interest to professionally flown corporate operators. As of November 2012 a total of 537 corporate and private aircraft had been registered. There are ports at Castletown, Douglas, Peel, Port St Mary and Ramsey. Douglas is served by frequent ferries to/from England and occasional ferries to/from Ireland; the sole operator is the Isle of Man Steam Packet Company, with exclusive use of the Isle of Man Sea Terminal and the Douglas port linkspans under the conditions of the user agreement with
Castletown, Isle of Man to the west Port St Mary and Port Erin. The older parts of the town are largely built of local grey limestone. At Scarlett, a short distance to the south of the town, there are the remains of an ancient volcano and various other features such as fossils and thick sheets of limestone. The A3 road connects Castletown with Ramsey via St John's, while the A5 road (also known as New Castletown Road as opposed to the Old Castletown Road which takes a more rural route nearer the coast) connects the town with Douglas to the north-east and Port Erin