In a message dated 3/16/2006 6:38:32 AM Pacific Standard Time, farreach@optonline.net writes: I'm planning to install a 12"x12" (9"x9" cutout) hatch in the forward deck right in front of the cabin. Hi Rick, I'm possibly just a worrier about this: Since there is no Mast Compression post. Will the cut out compromise the strength? Maybe a chime in from Jerry M. would be nice. Bob Eeg is burried in orders and his Email is down (cannot respond to the list) so, I dont think he'll give his opinion. However, he can be reached at the M-Boats phone number (949) 489-8227. Curious minds want to know. And, if the M15 suffers from anything; it is ventilation in the cabin. I hope it works out. Take photos - please. Bill "Photo Site"