 Complete the following phrase:  On 6 March 1915 Trent was requisitioned as a depot ship by the Admiralty and assigned to support the river monitors , and during the Gallipoli campaign. Trent was used to transport the monitors crews to Malta, while the monitors themselves were towed there by tugs. Trent continued to be used in support of the monitors, accompanying Mersey and Severn to East Africa in July 1915, for 