Last monitor in active service

According to Official Guinness Records,

Monitor class warships are named for the first of their class, USS Monitor, commissioned in 1862. They are slow, heavy and characterised by a low profile and single main turret. The Brazilian Navy’s riverine monitor Parnaíba (U-17) was commissioned in 1937 and is still in active service.

For a complete list of 2010 records, please visit 2010 Guinness Records in Brazil.

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