🔍 Key Concepts

• Bunkering signals required when transferring fuel at a dock or terminal • Differences between international COLREGS signals and local port/state requirements • Traditional color meaning of red vs green vs yellow in maritime safety signaling

💭 Think About

• Think about which color combination most clearly indicates danger and no open flame near a fuel transfer operation • Ask yourself which of these signal combinations is commonly associated with flammable cargo operations such as loading fuel or oil • Consider how the required signal would remain clearly visible both by day and by night to warn nearby vessels and dock workers

✅ Before You Answer

• Verify what your local port or national regulations specify for signaling during bunkering operations • Check which color is universally associated with fire hazard / stop / danger in maritime and industrial contexts • Confirm that the selected option uses the same warning color for both day and night signals, not two different meanings