RM Special Boat Squadron Support Ships - The 98.6m SBS Support Ship SD NEWTON, dating from 1976 was recalled by Serco Denholm to their service last year (2011) having been withdrawn at the end of 2010 when replaced the purpose built 83m SD VICTORIA which was termed a Worldwide Support Ship being based on the design of an anchor handling tug / supply craft.  The SD NEWTON had been a Cable Layer for the Royal Maritime Auxiliary Service and later served as a Sonar Trial Ship.    

The recall of the SD NEWTON is thought to be related to the expansion of the RM Special Boat Squadron and can usually be found in and around Greenock whilst the SD VICTORIA is a familiar sight in Portland Bay