Image courtesy Boston Planning and Development Agency

A high-rise hotel is now proposed for the Hook Lobster pound property on Boston Harbor, where developers earlier had planned to build a multifamily tower.

SKW Partners will seek approval for a 400-room, 275,000-square-foot hotel on the nearly half-acre parcel bordering Fort Point Channel, according to a letter submitted today to the Boston Planning and Development Agency.

And the Hook Lobster restaurant and wholesale operation will occupy a ground-floor space in the 305-foot-tall tower, developers said.

The hotel also will include a ballroom, meeting rooms and a rooftop restaurant and terrace, attorney Donald Wiest of Dain Torpy wrote. Designs call for an “architecturally distinctive structure.”

Plans to redevelop the property at 440 Atlantic Ave. date back six years, while Boston officials studied updated zoning for additional height and density on the central downtown waterfront.

Boston-based Conservation Law Foundation is challenging state approval of the new waterfront plan, which would clear the way for redevelopment of the Hook Lobster site as well as Chiofaro Co.’s Pinnacle skyscraper on East India Way.