In telecommunication, a maritime broadcast communications net is a communications net[?] that is used for international distress calling, including international lifeboat, lifecraft, and survival-craft high-frequency (HF); aeronautical emergency very high-frequency[?] (VHF); survival ultra high-frequency[?] (UHF); international calling and safety very high-frequency (VHF); combined scene-of-search-and-rescue; and other similar and related purposes.
... 24.2% from 45 to 64, and 12.7% who are 65 years of age or older. The median age is 39 years. For every 100 females there are 104.2 males. For every 100 females age 18 and ...