Hello again Sharron,
In addition to Colin's helpful reply, here's a quote from one of the documents I linked to in my previous post:
A drop strake is where two strakes of planking reduce to one, or three to two. A steeler (also spelled stealer) is the opposite principle: here one strake is worked to become two, or two strakes widen to three.
See pp. 1–2 of this article (**LINK**) for the same text with some further explanations and some sketches to illustrate and make clear what's meant; there's also quite a lot of information on stealers and drop strakes on pp. 21 ff of the other article I already linked to (**LINK**).
Good luck and lots of fun with your builds!
Mattias
Edited By Banjoman on 07/09/2016 21:37:43