U.S. Navy Rear Admirals: Navy Grade and Pay Regulations 1862-- Part 2

Level of Navy officers and number allowed

1st  Rear Admiral  (9)
2nd  Commodore  (18)
3rd  Captain   (36)

4th  Commanders   (72)
5th  Lieutenant-Commanders  (144)
6th  Lieutenants  (144)

7th  Masters  (144)
8th  Ensigns  (144)
9th Midshipmen (144)

Vessels in the Navy to be divided into four classes with the best ships as First Rates.  This determined ranks to command these ships.

FIRST RATE--  Commodores
2ND RATE--  Captains
3RD RATE--  Commanders
4TH RATE--  Lt. Comanders

--Old B-R'er