The BRA tonight approved a developer's plans to turn the historic but long-vacant Ropewalk building at the Charlestown Navy Yard into a new residential project and museum.
Some 30 of the proposed 90 apartments will be "affordable."
The bulk of the units will be in the long two-story-high Ropewalk building, which stopped making rope for the Navy in 1971. The adjacent Tar House will also be turned into apartments.
Under plans by developer Frontier Enterprises, half the units will have one bedroom each, while 34 will have three bedrooms and the rest two.