Morning lads,
Having reread this thread again I noted a difference in Cam's post #30 and Chris_Gee's post #38 with respect to the requirement to monitor one or more of the channels/frequencies depending on the type of equipment onboard and other status eg. compulsory or voluntary vessel, whether the
radios was on, etc.....
I believe the wording that Cam included last year is from an earlier version of the regs and that Chris_Gee's were from a subsequent update in 2003. That got me wondering if there were any newer updates so I went looking.
Below, I have included a link to the current electronic copy of the CFR 47 - Telecommunications regs and the latest text for two sections that were referenced in posts #30 and 38. The time stamps show the last updates were Jan. 25th of 2008.
http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&sid=9dc17fe3ab85b5f297550b5dc0852195&rgn=div5&view=text&node=47:5.0.1.1.1&idno=47#PartTop
§ 80.148 Watch on 156.8 MHz (Channel 16).
Each compulsory vessel, while underway, must maintain a watch for radiotelephone distress calls on 156.800 MHz whenever such station is not being used for exchanging communications. For GMDSS ships, 156.525 MHz is the calling frequency for distress, safety, and general communications using digital selective calling and the watch on 156.800 MHz is provided so that ships not fitted with DSC will be able to call GMDSS ships, thus providing a link between GMDSS and non-GMDSS compliant ships. The watch on 156.800 MHz is not required:
(a) Where a ship station is operating only with
handheld bridge-to-bridge
VHF radio equipment under §80.143(c) of this part;
(b) For vessels subject to the Bridge-to-Bridge Act and participating in a Vessel Traffic Service (VTS) system when the watch is maintained on both the bridge-to-bridge frequency and a separately assigned VTS frequency; or
[51 FR 31213, Sept. 2, 1986, as amended at 58 FR 16504, Mar. 29, 1993; 68 FR 46962, Aug. 7, 2003; 73 FR 4480, Jan. 25, 2008]
§ 80.310 Watch required by voluntary vessels.
Voluntary vessels not equipped with DSC must maintain a watch on 2182 kHz and on 156.800 MHz (Channel 16) whenever the vessel is underway and the
radio is not being used to communicate. Noncommercial vessels, such as recreational boats, may alternatively maintain a watch on 156.450 MHz (Channel 9) in lieu of
VHF Channel 16 for call and reply purposes. Voluntary vessels equipped with
VHF-DSC equipment must maintain a watch on 2182 kHz and on either 156.525 MHz (Channel 70) or
VHF Channel 16 aurally whenever the vessel is underway and the
radio is not being used to communicate. Voluntary vessels equipped with MF-HF DSC equipment must have the
radio turned on and set to an appropriate DSC distress calling channel or one of the radiotelephone distress channels whenever the vessel is underway and the
radio is not being used to communicate. Voluntary vessels equipped with Inmarsat A, B, C, M or Fleet F77 systems must have the unit turned on and set to receive calls whenever the vessel is underway and the
radio is not being used to communicate.
[73 FR 4485, Jan. 25, 2008]
And here's the link to the FCC site for a bit of info on license matters:
FCC: Wireless Services: Ship Radio Stations: Licensing
Enjoy,
John