In August 1915 with the amalgamation of the 9th and 7th Flotillas she was deployed to the 7th Destroyer Flotilla based at the River Humber . " Waveney " remained employed on the Humber Patrol participating in counter mining operations and anti-submarine patrols for the remainder of the war.
12.
Defenders could move relatively safely in the cover of the ditch and could engage in active countermeasures to keep control of the glacis, the open slope that lay outside the ditch, by creating defensive earthworks to deny the enemy access to the glacis and thus to firing points that could bear directly onto the walls and by digging counter mines to intercept and disrupt attempts to mine the fort walls.
