Hi Bo, My '87 M15 #400 had the deep port sail locker and the shallow molded starboard locker. I cut out the shallow locker to gain access to all that - otherwise - wasted storage space. Gives you the best of both worlds: the shallow locker area for small stuff, but lift out the shallow locker and you gain access to lots more storage area, which I use for extra cockpit cushions; the Bimini; the swim ladder, and my boot hook / paddle. I think I recall reading of some M15s that were only made with shallow sail lockers, but we need Jerry's input here. Connie