The Navy practice is set for Aug. 4, and the Super Bowl champions will practice at M&T Bank Stadium on Aug. 11. Both are free and open to the public.
The Aug. 18 practice at Stevenson's Mustang Stadium is also free, but only a limited number of fans will have the chance to win tickets through a lottery on the Ravens' website.
The Ravens can host 200 people at their training complex for practices, and there will be a random drawing for fans to attend one of their 13 open training camp sessions at team headquarters.
The first full-team training camp practice is July 25 with camp concluding Aug. 13.
Fans can also enter a lottery to reserve tickets to attend the premiere of “America’s Game: The Super Bowl Champions.”
An annual documentary series created by NFL Films profiling each season’s winning Super Bowl team, the 2012 Ravens’ feature will debut at the Patricia and Arthur Modell Performing Arts Center at the Lyric in Baltimore on Aug. 27.
The deadline for all lottery submissions is July 1 at 5 p.m.