The Institute of Maritime History (www.maritimehistory.org) is looking for volunteer crew to learn how to sail the gaff-rigged pinky schooner "Wyvern" on weekends and weekdays in the mid Chesapeake this year, and -- if funds and crew allow -- find and dive two historic shipwreck sites in the Caribbean next year.  For details, email david.howe@maritimehistory.org.