Sea Abbreviations and Acronyms
- ORCAOcean Research & Conservation Association
- ORCASOrganized Retail Crime Associations
- OSOwners Suite
- OSOwner Luite
- OSKAOrkney Sea Wayaking Association
- OSPRIOil Spill Preparedness Regional Initiative
- OSTOcean Surface Topography
- OTASOff-Throttle Assisted Steering
- OTTEROntology Technology That Executes Real-Time
- OWOcean Warriors
- PACCSAPPacific-Australia Climate Change Science and Adaptation Planning
- PALPassive Aquatic Listener
- PAMPalestine Archaeological Museum
- PDIMPower Data Interface Module
- PDMSPoint Defense Myssile System
- PDMSPoint Defense Missile Systems
- PGRPost Glaeial Rebound
- PIOMASPan-Arctic Ice Ocean Modeling and Assimilation System
- PJAPembangunan Jaya Ancol
- PMBCPhuket Marine Biological Center
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