This article is included in these additional categories:

Brazil | Contracts - Intent | Electronics - General | Lockheed Martin | Submarines | Training & Exercises | USA

Brazil Seeks Sub Fleet Combat System Upgrades

For more on this and other stories, please consider purchasing a membership.
If you are already a subscriber, login to your account.
Latest updates: SS Tapajo ready. S31 Tamoio(click to view full) The Marinha do Brazil’s 4 diesel-electric Tupi Class submarines (1,440t U-209/1400 variant) and single 1,550t Tikuna Class (Improved Tupi) boat must suffice to patrol a very large ocean zone, along one of the world’s longest navigable coastlines. The SS Tupi [S30] was commissioned in 1989, […]

One Source: Hundreds of programs; Thousands of links, photos, and analyses

DII brings a complete collection of articles with original reporting and research, and expert analyses of events to your desktop – no need for multiple modules, or complex subscriptions. All supporting documents, links, & appendices accompany each article.


  • Save time
  • Eliminate your blind spots
  • Get the big picture, quickly
  • Keep up with the important facts
  • Stay on top of your projects or your competitors


  • Coverage of procurement and doctrine issues
  • Timeline of past and future program events
  • Comprehensive links to other useful resources