Hawaiian Archipelago

Optimago, 308 pieces. And then on this one I forgot to take a picture of the finished puzzle! Several other puzzlers have asked me what I see in Optimago--they're so basic. For me that's the pleasure--they're like the Platonic ideal of a strip-cut puzzle; you can actually tell when a piece is in right by feel even though they are loosely cut. Anyway, this image was very faded and also a jarring reminder of American imperial history--the map shows bomb disposal zones and submarine lanes even as it warns people not to use it as a navigational aid. The map lines provided just enough guidance to make the puzzle doable. 3/5