Colombia is also practically a non-entity if we use Peru as a guide. Looking at the infrastructure and fleets they are practically similar, Colombia having an edge in DD numbers and heavy guns but Peru has a fast cruisers and a new coastal BB.
Pre-dread Cartegenia (ex Brazilian Dedoro, sold 1920)
Pre-dread Mariscal (ex Brazilian Floriano, sold 1920)
AC Cali (ex U.S.S. Columbia, sold 1919, refitted 1920)
AC Medellin (ex U.S.S. Minneapolis, sold 1919, refitted 1921)
DD Riohacha (ex U.S.S. Smith DD 17, Purchased 1920)
DD Monteria (ex U.S.S. Lamson DD 18, Purchased 1920)
DD Buenaventura (ex U.S.S. Preston DD 19, Purchased 1920)
DD Santa Marta (ex U.S.S. Flusser DD 20, Purchased 1920)
DD Solidad (ex U.S.S. Reid DD 21, Purchased 1920)
GB Corozal (Ex German type 1916 MS, used as gunboats)
GB Cordoba (Ex German type 1916 MS, used as gunboats)
GB Almerante Lezo
GB Bolivar
GB Chercinto
GB General Pinzon
RGB Esperanza
RGB General Nerino
...compaired to Peru's navy....
B Lima
CL Almirante Grau
CL Coronel Bolognesi
PC Callao
DD Teniente Rodriguez
DD Mollendo
SS Ferre
SS Palacios
GB Iquitos
GB Cahaupanas
GB Francisco Pizarro
GB America
GB Cusco
GB Puno
GB Requena
GB Oreliano
Infrastructure wise they are basically the same....
Columbia - 4 factories
at Cartagena:
1 Type 2 slip
2 Type 1 slips
3 Type 0 slips
1 Type 2 drydock
1 Type 1 drydock
at Buenaaventura:
1 Type 2 slip
2 Type 1 slips
4 Type 0 slips
1 Type 2 drydock
1 Type 0 drydock
Peru - 4 factories
at Callao:
1 Type 2 slip
2 Type 1 slips
2 Type 0 slips
1 Type 2 drydock
1 Type 1 drydock
1 Type 0 drydock
at Mollendo:
2 Type 0 slips
1 Type 0 drydock
In addition there are the following countrys in South America...
Bolivia - 2 factories
at Tiguina:
1 Type 0 slip
1 Type 1 drydock
Paraguay - 1 factory
at Encarnation:
1 Type 0 slip
1 Type 0 drydock