I'm using a G40 5/16 chain & 5/8 rope cause the LEWMAR
Concept 1 gypsy is a 002 & that is what the manual calls up. The chain is 20 ft long, rope 350 Ft. I know that is way overkill for a 23 footer but the gypsy has to have that size to work right. & there is tons of room under the V berth to accommodate it.