Perhaps the best natural harbour of the republic is that of Bahia Blanca, a large bay of good depth, sheltered by islands, and 534 m.
South of Bahia Blanca is the sheltered bay of San Blas, which may become of commercial importance, and between the 42nd and 43rd parallels are the land-locked bays of San Jose and Nueva (Golfo Nuevo) - the first as yet unused; on the latter is Puerto Madryn, 838 m.
The principal centres of the system are Buenos Aires, Rosario and Bahia Blanca, with La Plata as a secondary centre to the former, and from these the lines radiate westward and northward.
The naval arsenal is situated on the " north basin " of the Buenos Aires port, and the military port at Bahia Blanca is provided with a dry dock of the largest size, and extensive repair shops.
To meet the needs of technical and industrial education there are a school of mines at San Juan, a school of viticulture at Mendoza, an agronomic and veterinary school at La Plata, several agricultural and pastoral schools, and commercial schools in Buenos Aires, Rosario, Bahia Blanca and Concordia.