What is the purpose of the Joint Oil Analysis Program (JOAP)?

• A. On-ship oil testing, done weekly
• B. Off-ship lube oil testing, conducted monthly
• C. In-port sampling of fuel
• D. On-board lube oil testing

Answer: (B)

JOAP focuses on monitoring the health of ship propulsion and power systems by chemically analyzing lubricating oil. Samples are taken from the ship’s lube oil and sent off the ship to a central laboratory for standardized analysis on a regular basis, typically monthly. This off-ship testing yields detailed measurements of wear metals and oil contaminants, allowing trends to be tracked over time so abnormal wear or oil degradation can be detected early and maintenance planned before problems arise. It isn’t about testing on the ship itself, testing weekly, or sampling fuel in port—the reliable, centralized, monthly analysis of lube oil is what provides the essential condition information.