On waterfront, big industrial sites planned

Three companies this week proposed using two sites on the South Boston Waterfront for large-scale maritime or industrial projects.

The land, at the Boston Marine Industrial Park, is occupied by a large 1940s warehouse building, recently used for storage. The structure could be razed, according to the Boston Redevelopment Authority, which is reviewing the proposals.

The parcels for which the city sought proposals are at 3 Dolphin Way and 25 Fid Kennedy Ave.

Officials said they did not know when a decision would be made on leasing the land, which is in a long-underutilized area that is beginning to see development.

For one of the sites, Cargo Ventures LLC of New York proposed an international bulk facility for import and export of cement, consistent with the uses of nearby land it leases from the Massachusetts Port Authority on the North Jetty. The facility would have two 150-foot storage domes.

On the other parcel, Cargo Ventures proposes to build a facility for possible lease for maritime development, supply of photographic equipment, or use by a furniture or stone company.

Another proposal, from Conroy Development Corp. of Stoughton envisions the Seafood Center, a regional seafood transfer station, auction site, and display area. It would have a public area along the water, the company said.

Conroy also proposed a marine industrial building of about 195,000 square feet, with photovoltaic cells on the roof.

Lincoln Property Co. of Texas also submitted proposals for the two parcels. One was for a cold storage complex, including a new building of about 80,000 square feet. The other is for what it called SeaCar, a seven-level, 840,000-square-foot storage facility for automobiles that come in by ship.

"We look forward to evaluating these proposals to see how we can best maximize one of Boston's oldest industries," said BRA spokeswoman Jessica Shumaker.

Thomas C. Palmer Jr. can be reached at tpalmer@globe.com.