🔍 Key Concepts

• Standard voice procedure used in maritime and military communications • How similar-sounding words can be confused over noisy circuits • Why sound-powered phone circuits need clear, unmistakable replies

💭 Think About

• Which pair of substitute words are already widely used in radio or bridge-to-bridge communications for yes/no? • On a noisy line, which options are least likely to be mistaken for each other or for other short words? • Think about professional, disciplined language versus casual or slang expressions—what would a formal procedure manual choose?

✅ Before You Answer

• Verify which option matches formal communication standards, not slang or casual speech • Check which substitutes are clearly distinct from each other in sound, even if the line is distorted • Eliminate any choices that sound informal, humorous, or unprofessional for use in an emergency or on the bridge