The Navy on Sept. 25 conducted a decommissioning ceremony for the last of four Avengers-class mine countermeasures ships ...
A noteworthy fact about the Avenger-class minesweepers is that their hulls are constructed of wood—so as to avoid metal hull detection technology in modern naval mines.
The keel was laid for the first Macaé-class boat to have the capability to carry out mine countermeasures. Pictured here is NPa Macaé patrolling Rio de Janeiro's Bay of Guanabara in November 2024.