Posted by PaulW on
URL: https://forum.mymorbic.uk/Anomalies-and-mods-tp17p20.html

Hi Marc

HATCHES
ROUND is what we fitted, believing they should be more watertight - Pretty important for buoyancy tanks!  
Other benefits - No sticking-out handles/knobs which might snap off or on which lines might catch.
Disadvantage - They are not "captive"= Could get lost overboard unless restraint is fitted = Not convenient when ventilating.
Beware some have rather fine threads.  Coarser is probably better than finer.  Make sure they include seals.  Get a small tube of silicone grease.

RECTANGULAR might grant better access to stowed items?
Minimal risk of the disadvantages of round ones.
Choice could depend on whether you can you get good watertight ones with non-vulnerable latching.

LOCATION:-
Mount the forward one off-centre - not in line with the mast!
We've added one on the forward face of one of the side lockers for stowage of long items.

All just my opinion - It would be interesting to hear other views.