Gwylan is a 28 foot L. Francis Herreshoff H-28 ketch built in 1977 on the Sheepscot River in Westport, Maine by McKie (Nick) Roth. She very closely follows LFH's original 1942 plans except for the addition of the short bowsprit. She is planked in white cedar over oak framing, with bright mahogany deckhouse and trim.

She normally sails out of Riverton Yacht Club on the Delaware River opposite northeast Philadelphia, and is a handy vessel for day-sailing or simple cruising for one or two people.

For many seasons her owner has single-handed her on week-long cruises on the Delaware and all over the Upper Chesapeake. She spends her winters at Cutts and Case in Oxford, MD.