Two Boston developers have filed plans for a hotel and residential project on the former Hood Milk campus in Charlestown.

Catamount Management Corp., the owner of the 20-acre Hood Park development site, and Trademark Partners filed a letter of intent with the Boston Planning Department to build a hotel with up to 160 rooms and a 90-unit apartment complex.

The project at 15 and 25 Supertest St. would also include ground-floor retail.

Hood Park — the redevelopment of the former Hood Milk manufacturing campus — is a mixed-use development that includes 500K SF of office and lab space, 51K SF of retail and 177 residential units. The project is ultimately envisioned to include 1.8M SF of office and lab space, 100K SF of retail, 335 residential units and hotel rooms.

The park includes the 100 Hood Park Drive tower and the 10 Stack St. lab and office building.

The latest project would total 206K SF, representing a 77K SF increase from what was envisioned in the Hood Park master-planned area. And it would have a one-level, below-grade parking garage with 224 parking spaces.

"In an effort to maximize the available family sized affordable housing units in the Charlestown neighborhood, the Proponent has identified an experienced and qualified affordable housing development partner and will be coordinating an off-site program of three- and four-bedroom affordable rental units," the filing from Trademark stated.

Dairy manufacturer Hood Milk was founded in Charlestown in 1846. In 1996, it closed its plant and moved to Chelsea. It then moved again in 2008 to Lynnfield, where it currently resides.

The Charlestown campus has hosted several public gatherings, including Winter Fest and Wicked Haunt Fest. Earlier this month, the campus welcomed Charlestown Brewing Co. as a tenant at 100 Hood Park Drive.