Free boat plans, boat plan resources, and free cad boat drawing file downloads. Free jet engine plans for download. please do not pay for ram jet, pressure jet or pulse jet plans from ebay and other online sellers – all are available free of charge from john-tom. Hdms agdlek (model boat plan) hdms agdlek. this is a two sheet plan designed by james pottinger for a danish fishery protection cutter built in 1974..