Free ship plans from orlogsbasen.dk. orlogsbasen is a searchable, online ship plan database provided by the danish national archives and the royal danish naval museum.. Heung kong a 1:33rd scale hong kong harbour tug. the model is 740mm loa, 280mm beam, and is designed for two electric powered swivelling kort nozzle equiped prop systems.. More about these model boat plans. they fall into two categories: cad generated and computer lofted. the cad generated plans are of exceptional quality, simply.