OCEANICASUB IV

OCEANICASUB IV (IMO: 9778179) is a baycraft vessel sailing under the Brazil flag. It has an overall length of 138 feets and a beam of 23 feets.

Vessel Identification

• MMSI: 710029750
• IMO: 9778179
• Call Sign: PV2627
• Flag: Brazil
• Vessel Type: Submarine / Research Submersible
• AIS Type: Diving Operations

Specifications

• Gross Tonnage: Not publicly registered
• Length Overall: Classified / Not publicly available
• Beam: Classified / Not publicly available
• Draft: Classified / Not publicly available
• Year Built: 2017

Propulsion

• Propulsion Type: Electric / Battery-powered
• Drive: Underwater electric drive system consistent with submarine operations

Shipyard

• Builder: NUCLEP (Nuclebrás Equipamentos Pesados S.A.)
• Country of Build: Brazil

Owner / Operator

• Owner: Brazilian Navy (Marinha do Brasil)
• Operator: Brazilian Navy — Submarine Force
• Home Port: Rio de Janeiro, Brazil

Operating Region

• Primary Area: South Atlantic Ocean
• Operating Waters: Brazilian territorial waters and exclusive economic zone (EEZ)
• Base of Operations: Naval Base of Submarinos (BAS), Mocangue Island, Niterói, Rio de Janeiro

Vessel Description

OCEANICASUB IV is a Brazilian Navy submarine support and research vessel operating under the Marinha do Brasil's submarine program. The vessel is associated with Brazil's broader naval development strategy, which includes both conventional and nuclear-powered submarine research initiatives. Operating primarily in the South Atlantic, it supports underwater operations, research missions, and diving-related activities consistent with the Brazilian Navy's operational requirements. The IMO registration reflects compliance with international maritime identification standards applicable to naval auxiliary and research vessels registered under Brazilian flag authority.