P.T.12 (1916) and P.T.13 (1916)
Scale 1:48. A blueprint copy of a plan showing an inboard profile and plan view with additional details for the paddle tugs PT12 (1916) and PT13 (1916). The drawing also shows arrangements for temporary boarding for a voyage. A note on the plan states that "P.T.12 has no steel plates alongside openings, but was cladded with wood 28 December 1916". There two tears on the right hand edge.