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December 2008Round the world teenager puts pilot problems behind him Three new stars in the sky -- Glonass satellites launched Here comes summer Ofcom U-turn on licence price hike? DfT plans to revive drink-boat law End of the line for old EPIRBs 30 Dec: Round the World teenager puts pilot problems behind him Michael Perham's
chances of being back in the UK in time for his 17th birthday in March
are
looking slim. Dogged by problems with his NKE autopilot, he has spent
almost a month in Las Palmas, in the Canaries. He's now under way
again, but faces light headwinds and slow progress. Even so, after what must have been a very frustrating Christmas, Mike said it was "absolutely brilliant" to be on his way again. Criticism of the NKE pilot is understandable, but Mike says that with every hour of trouble-free operation, his confidence in the repaired system is increasing. A couple of things to bear in mind:- 1. Mike isn't totally dependent on one autopilot: he has a back-up system (a Raymarine). But if he had carried on with his primary system out of action, then he would have had no reserve. 2. Windvane systems served the likes of Hasler, Chichester, and Knox-Johnson very well. But they don't work on boats like Totally Money, which is designed to operate at 20+ knots, and would be particularly unreliable when surfing downwind -- the very conditions in which Mike's autopilot will be most important to him.
25 Dec: Three new stars in the sky -- Glonass satellites launched ![]() Glonass, the russian counterpart to GPS, took another step towards full operation on Christmas Day, with the launch of three more satellites. When they become operational -- a process which takes about six weeks from launch -- they should bring the constellation up to a total of twenty satellites. Official performance predictions from the Russian Space Agency suggest that 18 satellites are required to guarantee continuous coverage of Russia itself, and that 24 are required to provide world-wide cover. Despite early reliability problems, which saw satellites failing almost as quickly as they were being launched, Glonass achieved continuous world-wide coverage in 1995, but subsequent under-funding saw the system crumble. It has undergone a revival in recent years, with increased investment and significantly improved reliability, and is expected to achieve the full 24-satellite constellation by the end of 2009.
22 Dec: Here comes summer ![]() Sunday December 21 was the winter solstice -- the shortest day of the year. From now until the summer solstice in June,the sun will rise a little later each morning, and set a little later each evening. So although many regard the Solstice as the "start of winter", it's equally true to say that we've turned the corner, and are now on our way to summer. ![]() 18 Dec: Ofcom U-turn on licence price hike? Ofcom
appears to be backing down – at least partly – from its plans to
introduce massive hikes in the cost of coast radio station licences. The original plans, published in July, were for a ten-fold increase in the licence fee for a typical yacht club base station (from £75 per year to £740) and were to be rushed into force for April 2009. They were met by a hail of protest when the general public realised that Ofcom was planning to help itself to over a quarter of a million pounds a year from the RNLI – one of the UKs most popular charities.
Few yacht clubs, marinas, harbor authorities, or local search and rescue organizations, however, will benefit from a nationwide licence. For them, the only crumb of comfort so far is that in a separate document, Ofcom proposes to defer the price hike until April 2010. See Call me a cynic on the Comment page. ![]() 01 Dec: DfT plans to revive drink-boat law Representatives of the RYA and BMF have had another round of meetings with officials at the Department "for" Trade, to stave off yet another threat to impose a "drink drive" limit on recreational boaters. The legislation is already on the statute book, in Section 80 of the misleadingly-named "Railways and Transport Safety Act 2003", but it has never been brought into force. Successive transport ministers have announced their intention of doing so, but on each occasion so far they have been persuaded of the fact that it is unnecessary and would be unworkable. The DfT is likely to publish a so-called "consultation" document with as little publicity as possible in the run-up to the Xmas/New year break. Look out for it on www.dft.gov.uk/consultations/open The previous consultation is still available on www.dft.gov.uk/consultations/archive/2004/alnm/alcohollimitsfornonprofessio1104, with the results on www.dft.gov.uk/consultations/archive/2004/alnm/conresalcohollimits See Yo ho ho and a bottle of mineral water!on the Comment page. ![]() 01 Dec: End of the line for old EPIRBs ![]() The RYA has issued a reminder that on 1 February, the Cospas-sarsat satellite system will no longer monitor or process signals on 121.5MHz or 243MHz EPIRBs that transmit on these frequencies can still be used to provide a short range “homing” signal, but as distress alerting devices, they will be redundant. Most modern EPIRBs operate transmit a digital signal on 406MHz: they are not affected by the change. For many years, now, there has been concern that the 121.5MHz and 243MHz EPIRBs have been particularly prone to producing false alerts, with something in the order of 98% of all 121.5MHz distress signals being transmitted by accident. When a distress alert is received, it is impossible to identify the source – and if it does turn out to be genuine, the positioning accuracy is so poor that rescuers may have to search nearly 400 square miles to find the casualty. 406MHz beacons, by comparison, generate an identifiable signal that allows many false alerts to be quickly identified and discounted, and give a position which is usually accurate to within a few metres. Anyone wishing to dispose of a 121.5MHz EPIRB should first remove the battery, and then take it to a local authority recycling facility. ![]() |
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