David Jack's chaser model project is a scratch-built, RC model. The photos sets in this collection show the construction, fitting, and testing of the model. This is a model with excellent, fine detail, a depiction of SC 131 in war time. SC 131, under the command of Ens. W.B. Donahue, was a wing boat in Unit K, serving in the Otranto Barrage. Unit K consisted of SC 130 (unit leader), SC 131 and SC 216. Note also David Jack's WWII chaser model, shown in the third set. Both are 1:24 scale.