Two of Alaska’s largest tug and barge companies could merge later this year. Lynden Transport has signed an agreement to purchase Northland Services, pending regulatory approval.

Both companies provide regular service to Southeast and Southcentral Alaska, while Northland specializes in freight delivery to Western Alaska, including Unalaska and St. Paul. If the purchase is approved, Northland will still operate as its own company, under the same management.

In a written statement about the proposed deal, Lynden Chairman Jim Jansen says it will allow for “integrated statewide Alaska service, higher service frequency, and greater combined capabilities.” Lynden hopes to finalize the purchase by late 2013. Neither company could be reached for comment on the proposed deal.