Two LST (3)s were converted during building into Headquarters command ships LST (Q). These were L3012, which became L3101 (and later HMS "Ben Nevis") and LST 3013, which became LST 3102, and then HMS "Ben Lomond". They acted as LST "mother ships", similar in most aspects to American ships based on the LST (2) hull. They had two Quonset huts erected on the main deck to accommodate 40 officers. Berths on the tank deck berthed an extra 196 men. A bake shop and 16 refrigeration boxes for fresh provisions augmented the facilities normally provided for the crew. Four extra distilling units were added, and the ballast tanks were converted for the storage of fresh water.