Brian Callison, A Plague of Sailors, 1971
MS British Commander
Armed Merchant Cruiser operated by the Royal Navy's covert operations wing, the BMSNC (British Mutual Steam Navigation Company).
Armament: 4.7 inch Guns. 21 inch torpedos. Ikarara missile. Sunk 1971
Plot: With the whole Middle East coming together to deal with an outbreak of the plague, someone plans to bring an end to the peace by releasing a genetic altered version of anthrax.
For those who are interested here are all the ships owned by the British Mutual Steam Navigation Company mentioned in 'A Plague of Sailors' and 'A Frenzy of Merchantmen'. Those noted with a '*' have a 50-Mt nuclear bomb concealed in one of the fuel tanks.
MS British Allegiance
MS British Commander (Sunk 1971)
MS British Regiment *
MS British Sailor
MS British Venturer * (Sunk 1977)
Armament in all cases varies depending on mission, but can include guns, missiles, torpedos & mines.
The first novel states that the company owns nine ships with two more under construction.