Note 1 — Chapter V · HARPER’S FERRY
Reading edition
Strength of the Federal Navy at different periods:— March 4, 1861: 42 ships in commission. December 1, 1861: 264 ships in commission. December 1, 1862: 427 ships in commission. December 1, 1863: 588 ships in commission. December 1, 1864: 671 ships in commission.