Scale 1:48. Plan shows a profile and plan view illustrating the rig arrangement, as fitted, of the Algerine class mineseeper Alarm (1942). A Harland & Wolff stamp, dated 2 July 1942, is present on the left hand side of the plan. A second stamp, with the signature of the Harland & Wolff Principal Ship Overseer, dated 3 July 1942, is underneath the first stamp.