[2] Its first locomotive, the Augusta, emerged from the shops in July 1848 for delivery to the Portland, Saco & Portsmouth (later part of the Boston and Maine Railroad).
Over the next several decades, the company produced in its Fore Street facilities over 600 steam locomotives as well as 160 merchant and naval vessels, railcars, construction equipment, Knox automobiles, and the like.
Presently, according to The Portland Company Complex website, the site has become marine-oriented, with a small marina, several marine and other office tenants and the Maine Narrow Gauge Railroad Co. & Museum.
[citation needed] The Portland design retained ornate Victorian features including capped domes and a cab roof with reversing curvature.
[citation needed] The final two-foot gauge locomotive built by The Portland Company was a less successful enlargement of the original design.