🔍 Key Concepts

• SOLAS survival craft radio requirements for VHF portable radios • Differences between Ch-13 (bridge‑to‑bridge) and Ch-16 (distress, safety and calling) • Technical requirements such as power output and simplex operation for survival craft VHF units

💭 Think About

• Which VHF channel is internationally designated for distress, safety, and calling, and would therefore logically be required on survival craft equipment? • Is Ch-13 primarily related to survival craft, or is it normally associated with bridge‑to‑bridge navigation safety between vessels? • Think about typical handheld survival craft VHF radios: are they usually low‑power or high‑power, and do they use simplex or duplex operation?

✅ Before You Answer

• Verify in SOLAS / GMDSS guidance which channels are mandatory on survival craft portable VHF sets (especially Ch-16 and any others). • Confirm whether the minimum effective radiated power for survival craft VHF is 0.25 W or higher. • Check if survival craft VHF sets are required to be simplex only and whether Ch-13 is explicitly listed as a requirement.