Design software: aerohydro (marine design and modeling software and services) aerologic (lofting, simulation and analysis software) aeromarine research (tunnel boat. All power boats 16′ long and under. tech support. the best technical support: we will help you succeed! all our plans and kits come with full technical support.. Instruction in kayak building by h.c. petersen . excellent guide to building a greenlandic kayak with text in greenlandic/danish/english. available online from the.