@Marmalade Wow, where did you get the line drawings of the keel and shipping cradle and for that matter are full line drawings available for Hunter's. I'd love to get a copy for my 1994 40.5Drawing of Keel... I don't quickly see width simply dimensioned, but could get a ruler and get +/- 1" based on the scale.
Or, reference the 376 Shipping Cradle