Augustus Hemenway had timberland in Maine and started his schooner shipping company to take timber to Eastcoast ports.
[1] In 1865 Héctor Beéche (?-1914) became a partner in the firm and a subsidiary company, Wessel, Duval y Cía, was founded in Chile by Charles P. Hemenway, Augustus's brother.
In 1885 Muller retired and Carlos Wolff joined the partnership, the company name was changed to Hemenway, Beeche and Co..
In 1888 Peter "Perdo" M. Wessel (1851-1821) joined the partnership and the company name was changed to Browne, Beeche and Co..
The West Coast Line started regular service from New York City to Valparaiso and Callao, Peru.
The Chile rail firm, Ferrocarril del Llano de Maipo in Santiago used Wessel, Duval & Co. to import their railroad equipment in 1890.
In from 1920 to 1932, West Coast Line was the US agent for Compania Sud Americana de Vapores, the South America Steamship Company of Chile.
The most common armament mounted on these merchant ships were the MK II 20mm Oerlikon autocannon and the 3"/50, 4"/50, and 5"/38 deck guns.