The SW1200 design started life back the very early 1990's as a Grainger Azure 37 as a strip planked cedar epoxy
build. It was then stretched to 40 by owner builders then put into production by Bryan Perry Brisbane Australia
. I was told Tony Grainger never got royalties for each vessel built and then the boat was further modified by Perry. This Perry 40 design was then bought by Seawind.
There was a major floor with the modified Perry 40 design where it had problems with the main bulk head
separating away from the deck
and cracking around the doorway into the main cabins in this bulk head
. This occurred after the vessel was subjected to prolong heavy weather
windward sailing. EG. sailing the Gulf of Carpenteria.
One reason this happened was the doorway was cut higher to give more head room which then weakened the general area as well as little or no fibreglass reinforcing being used in this high stress join area.
The fix was to grind back the area and then add uni directional and biaxle glass.