Security measures are *not* necessarily extended by the Contracting Governments for which type of ships/crafts?

Answer & Explanation

The correct answer is Option B: Fishing vessels.

The ISPS Code primarily applies to cargo ships of 500 GT and above, passenger ships, and mobile offshore drilling units on international voyages. Fishing vessels are generally exempt from the mandatory requirements of the ISPS Code, although some national regulations may impose similar measures.