Battery Basinger (with two 3-inch M1898 guns) was completed in 1901, the remainder (each with two 3-inch M1902 guns) were completed in 1906.
The Battery Basinger, equipped with two 3-inch M1898 cannons, was completed in 1901. The remaining batteries, each armed with two 3-inch M1902 cannons, were finished in 1906.