Coast Defenses of the Kennebec
| Harbor Defenses of Portland | |
|---|---|
Coat of arms
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| Active | 1895-1950 |
| Country |
 United States
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| Branch | United States Army Coast Artillery Corps |
| Type | Coast artillery |
| Role | Harbor Defense Command |
| Part of |
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| Garrison/HQ |
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| Motto(s) | Terrae Portam Defendamus (We Defend The Land Gate) |
| Mascot(s) | Oozlefinch |
The Harbor Defenses of Portland was a United States Army Coast Artillery Corps harbor defense command. It coordinated the coast defenses of Portland, Maine, the mouth of the Kennebec River, and surrounding areas from 1895 to 1950, beginning with the Endicott program. These included both coast artillery forts and underwater minefields. The command originated circa 1895 as the Portland Artillery District, was renamed Coast Defenses of Portland in 1913, and again renamed Harbor Defenses of Portland in 1925.
The Kennebec coast defense command may have originated as the Kennebec Artillery District with the establishment of Endicott program minefield support facilities in the 1890s at the Civil War-era Fort Popham in Phippsburg, and deployment of mines there during the Spanish–American War. However, it is unclear from references whether the Coast Defenses of the Kennebec (as it was probably renamed in 1913) was ever a command independent of the Coast Defenses of Portland. At some time prior to 1917 the commands were merged. Between 1905 and 1912 Fort Baldwin was built near Fort Popham, during the Taft Program period. It was one of the smallest forts of the era, with three 6-inch guns and two 3-inch guns. During World War I these forts were garrisoned by two companies of the Coast Defenses of Portland (CD Portland), and references do not show the Kennebec command active during that war or in World War II. Fort Baldwin was disarmed in 1924, although the minefield capability at Fort Popham may have been retained through World War II. Fort Baldwin was rearmed with a battery of four towed 155 mm guns on "Panama mounts" in World War II, operated by Battery D of the 8th Coast Artillery. Some references list Forts Popham and Baldwin with the Harbor Defenses of the Kennebec due to their geographical separation from the Portland area and to be consistent with other fort listings.
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