3. From the bottom, which step of a pilot ladder should be fitted with a spreader？ (A) 4th step (B) 5th step (C) 6th step (D) 7th step

4. ______ can be deployed to broadcast the position of the vessel via the satellite communications system in situations where the ship is in critical condition or about to sink. (A) Automatic Indication System (B) Global Positioning System (C) Emergency Position Indicating Radio Beacon (D) Echo sounder