We are replacing our original 1976 wood mast on Calypso with an aluminum mast supplied by Selden. The new mast should be delivered at the end of March (2021). Selden will have our mast design on file if any other BCCs wish to investigate a similar project. There are a few caveats though. Calypso does not have the 4" Delrin mast step block in the bilge - and I do not intend to install one. So the “bury” measurement will differ from “standard”. Also, the Selden mast will use their standard mast head sheave box arrangement - which differs from the Forepsar mast which mounted the sheaves about a foot below the mast head. Happy to share further details and answer any questions folks might have about our experience as we undertake this project.