From an AbeBooks description

"A history of the Royal Naval Volunteer Reserve and an account of their exploits from the late 19th C to post WW2, incl. in WW2 an account of Coastal Forces in home waters and the Mediterranean, the 2nd MTB flotilla at Hong Kong, minesweeping and mine disposal, the Fleet Air Arm, etc, photo ills. include trawlers (T66, T37), landing craft, ML's and an MTB"