What does SWOP stand for?

Service Weapons Operational Procedures (MCD)

Special Leave Without Pay

Special Weapons Ordnance Pamphlet (SAUS)

Special Weapons Ordnance Publication - Navy (NVT)

Specifications for Web Offset Publications - Printing technology

Standard Web Offset Press - Computer science

Stereo Wave Observation Project (IAA)

Stop without Pay

Structural Weight Optimization Program - NASA (KSC)

Switchable Input Operation (SAUS)

Switchboard Operator - British military (DMA)