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contentseditorx19snoteWehopeyouenjoythisissueofHorizon.Forupdatesbetweenissuespleasevisitourwebsitewww.trinityhouse.co.ukWewarmlywelcomeanyfeedbackorcontributionsyouwouldcaretomake.Pleasesendthesetomeby30September2010.VikkiGilsonEditorTrinityHouseTowerHillLondonEC3N4DHTel02074816960Fax02074807662E-mailvikki.gilsonthls.orgwww.trinityhouse.co.ukTheCorporationofTrinityHouseMasterx13HisRoyalHighnessThePrincePhilipDukeofEdinburghKGKTCorporateBoardRear-AdmiralSirJeremydeHalpertKCVOCBFRINDeputyMasterCaptainDuncanGlassOBERentalWardenCaptainNigelPrykeFNIMCITNetherWardenSimonSherrardEsqTheRtHonTheViscountCobhamCommodoreDavidSquireCBEFNIFCMIRFACaptainRichardWoodmanFRHistSFNICommodoreJimScorerRNCaptainRogerBarkerCommanderGrahamHockleyRNSecretaryLighthouseBoardRear-AdmiralSirJeremydeHalpertKCVOCBFRINExecutiveChairmanCommodoreJimScorerRNCaptainRogerBarkerJerryWedgeEsqCaptainNigelPrykeFNIMCITDavidColtmanEsqChrisBourneEsqMaxGladwynEsqJonPriceEsqSecretaryIntroductionbytheExecutiveChairman.............................1Areviewofthelastsixmonths.........................................2TheGLAReview............................................................4Virtualaidstonavigation................................................6EngineeringBriefing........................................................7TheIALAYear...............................................................10RepairstotheCoquetlanternventilator..............................12RainwatertreatmentforSouthBishop................................14GPSjammingandthebenefitsofeLoran.............................16PYBS...........................................................................18TheNationalMaritimeMuseumCornwall............................20TheCharityYear.............................................................22AroundtheService........................................................23Whenyouhavefinishedwiththismagazinepleasepassitonorrecycleit.PrintedonGreencoatVelvetaCarbonBalancedPaperx13wherethecarbonintensityhasbeenmeasuredthroughtheproductionprocessandanequivalentcarboncreditoffsethasbeenpurchasedmadefrom80recoveredfibredivertingwastefromlandfillcontainsmaterialsourcedfromresponsiblymanagedforeststogetherwithrecycledfibrecertifiedinaccordancewiththeFSCmanufacturedtoISO14001andEMASEco-ManagementAuditSchemeinternationalstandardsminimisingnegativeimpactsontheenvironmentDESIGNMichaelSturleyx13www.sturleydesign.comPRINTAquatintBSCx13www.aquatintbsc.co.ukCOVERIMAGEAtthemostsoutherlytipofmainlandBritainsitsthetwin-toweredLizardlighthouse.Thelighthousewascommissionedin1752andforover250yearshasprovidedawelcominglandfalllighttomarinerscrossingtheAtlanticOceanboundfortheEnglishChannel.ThelighthousewasawardedagrantbytheHeritageLotteryFundtodevelopitsHeritageCentretoprovidebenefitsforthelocalandwidercommunitythroughtheprovisionofnewinterpretationdisplaysandeducationalmaterial.Page2Page4Page8Page10Page16Page18Page24AcknowledgmentsWeacknowledgetheassistanceofthemanyindividualsandorganisationswhohavekindlyprovidedimagesforthisedition.ParticularthanksareduetoPage5MCAPage7NASAPage10PORTNETPage11IALAPage20NMMCornwall