Originally Posted by Cigatoo
I have the original manual for our 1984 GB 36. No mention of lifting capacity for the mast and boom.
The original mast and boom are very likely there only for decoration.
The Europa GB 42 I saw with a failed dinghy crane had one that was a proper dinghy crane, likely with the rated lifting capacity in the model name stenciled right on the unit. Steelhead 1000# is likely what you need, as your boat deck is big enough for a dinghy that weighs up to 750#.
My boat came to me with a mast and boom, both made of aluminum, but so weak that the deck fitting failed while lifting an empty Sabot. Total weight under 50 pounds! Yours isn't likely any better than that, so if you are planning a dinghy lift that weighs in at several hundred pounds, you need to shop for a real davit crane. Your mast and boom are there for decoration and the "trawler look", not for lifting loads as heavy as a dinghy with an outboard.