🔍 Key Concepts

• SOLAS Chapter I – regulations on surveys and certification • Difference between issue date, expiry date, and any possible extension of a certificate • How long statutory safety certificates for cargo ships are generally valid

💭 Think About

• Think about how often a cargo ship would reasonably be required to undergo a full safety radio survey to ensure equipment is still compliant and functional. • Compare these options to the typical validity period of other SOLAS cargo ship safety certificates (like Safety Construction or Safety Equipment). Are they usually very short, medium, or very long? • Which choice best matches an interval that balances administrative practicality with maintaining up‑to‑date radio safety?

✅ Before You Answer

• Verify in SOLAS Chapter I, Regulation 11 or 12 how long cargo ship safety certificates remain valid. • Check whether the period of validity is measured in months or years, and convert the answers mentally to years for easier comparison. • Confirm whether normal validity is a fixed maximum period (not including any short extensions) for cargo ship statutory safety certificates.