The real reason for closing the GHM marina was GHM owner mad action's.
In this spring GHM owner anchored floating dock across the local shipping channel and
closed completely access to neighbouring harbor Haapsalu Yacht Club (HJK). That's why
local authority and maritime authority closed the GHM marina until they stop blocking
access to other marinas.
And yes all marinas in Haapsalu currently closed because .. GHM is first marina if you come from open sea by local narrow shiping channel and forward access thru channel is closed by GHM.
And also almost all local yachts is trapped in HJK.

Pictures: http://www.xcom.ee/~indrekk/haapsalu/