🔍 Key Concepts

• Naval Control of Shipping (NCS) vs normal peacetime routing publications • Difference between a supplement and a primary manual/guide • Which titles sound like they are used by merchant masters vs strictly by naval authorities

💭 Think About

• Ask yourself which of these sounds like a document specifically written as a handbook for a ship’s master to use under naval control, and which sounds more like an internal Navy routing document • Consider whether a "communications" document would typically be carried on board if the ship is expected to follow naval routing and reporting procedures • Think about whether all three titles logically need to be on the merchant vessel, or if one of them might instead be held by shore or naval command only

✅ Before You Answer

• For each option, decide: is this aimed at merchant vessel masters, or at naval planners/controllers? • Consider whether a document that describes tactical routing is something a merchant ship would plan, or something given to them as instructions from naval control • Before choosing "All of the above," make sure you can give a clear onboard purpose for each individual publication