🔍 Key Concepts

• P-tank purpose on an offshore supply vessel (OSV) – used as a pressure tank to boost drilling mud or other fluids to rigs/platforms • Typical low-pressure vs medium-pressure vs high-pressure ranges used for cargo / mud transfer on OSVs • Relationship between hose/connection ratings and safe operating pressure for routine supply operations

💭 Think About

• Think about what job a P-tank is doing: is it usually handling very high-pressure well-control type pressures, or more moderate transfer pressures? • Which pressure range would be high enough to move large volumes of mud/fluids efficiently through long hoses, but still low enough for routine deck equipment, manifolds, and hoses? • Eliminate options that sound more like instrument air or service air pressure, and options that sound more like high‑pressure test / well-control pressures, not everyday cargo transfer.

✅ Before You Answer

• Check what typical cargo/mud transfer hose working pressures are on offshore supply vessels • Consider what pressure range would be continuously sustainable by a shipboard P-tank without requiring heavy-wall high-pressure piping everywhere • Verify which ranges are commonly associated with pneumatic or hydraulic tools versus bulk fluid transfer systems on supply boats