I'm mounting a new holding tank
in my O'day 39. The factory tank was only 9 gallons and mounted onto plywood
base bonded to the bottom on the centerline under the forward v-birth. (a place that would see no flexing)
The new tank is much larger and I am planning a plywood
structure to properly support the tank.
The structure will be two bulkhead like plywood pieces mounted athwartships. My question is how far up the inside of the hull
can I safely bond the structure? My thought is that a flexing of the hull
could destroy the supports. My other choice may be to make it so solid that it would add to the stiffness of the boat and prevent any flexing.