Tod and Connie, Thanks, you've given me some good ideas. I went to this website based on Connie's suggestion; http://www.containerstore.com/browse/Product.jhtml?CATID=243&PRODID=60123 I wonder if thier small stacking box measuring 10" x 20" x 8-1/8" h would fit in the port cockpit locker of an M15. My boat is still snowed in so I can't measure it. I'm guessing that 10" wide is too wide. It doesn't appear that they have what we're calling milk crates. I'll keep looking. Rick Langer