Whilst I'm sure he'd be amazed at the small, compact engine size... the rest of your post is not quite true:
They had large rowing-boats (more than one) and plenty of crew to provide sufficient auxilliary power (10 man-power?) to get them out shallow water or poor winds - and the seamanship with wind/tide to know how best to do it - but going there in the first place with either no charts or poor charts, is IMO far more gutsy.
It was quite common for the first explorers (Cook et al) to re-draw someone else's charts as they sailed along. Scary stuff!