Re: [Ccglrit-gcclrit] Further Documents for May meeting of Ad HocEngineering Group - MALTA May 9-12

Many thanks, Tracy Ref "Revised Draft Technical Specifications for Communication in the LRIT System", Table 2, "LRIT Positional Data (Position Report) Messages". The table is over-prescriptive and does not reflect what is actually available and transmitted by current ships' equipment. (1) Latitude and Longitude Latitude and Longitude are taken from the inbuilt or onboard GPS and are presented as Degrees, minutes and decimals of minutes (to 2 decimal places) e.g. 59 57.92' N, 30 14.20' E which is 59 degrees 57.92 minutes North; 30 degrees 14.20 minutes East - and perfectly adequate. To require the format to be degrees, minutes and seconds would require expensive changes to onboard equipment (2) Time Stamp 1 Date and time are similarly taken from the inbuilt or onboard GPS and are presented as Day, Month, Year, Hour, Minute e.g. 16-SEP-06 07:04 (which is self-explanatory; seconds are not transmitted) To require the format to be year, month, day, minute and seconds would require expensive changes to onboard equipment Please ensure that the LRIT ad hoc engineering group reviews these specific parameters and does not set over-prescriptive requirements that could require expensive changes to or complete replacements of shipboard equipment. We are not starting out to design new shipboard equipment, I believe, and should accept the standard reporting formats that are already provided by the existing equipment. Many thanks Brian Brian Mullan Head, Maritime Safety Services Inmarsat, 99 City Road, London EC1Y 1AX, UK Tel: +44 (0)20 7728 1464 Fax: +44 (0)20 7728 1689 Mob: +44 (0)7711 495836 www.inmarsat.com ________________________________ From: ccglrit-gcclrit-bounces(a)lists.ncf.ca [mailto:ccglrit-gcclrit-bounces@lists.ncf.ca] On Behalf Of Peverett, Tracy Sent: 19 April 2007 20:56 To: ccglrit-gcclrit(a)lists.ncf.ca Cc: Lawrence Sciberras Subject: [Ccglrit-gcclrit] Further Documents for May meeting of Ad HocEngineering Group - MALTA May 9-12 Hello, Further to my earlier e-mail, attached is the Revised Draft Technical Specifications for Communications for your review and comment. Best regards Tracy Tracy Peverett Senior Policy Advisor Canadian Coast Guard (613) 990-4046 This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. In accordance with Inmarsat Information Security Policy and Guidelines on Computer use, emails sent or received may be monitored. Inmarsat plc, Registered No 4886072 and Inmarsat Global Limited, Registered No. 3675885. Both Registered in England and Wales with Registered Office at 99 City Road, London EC1Y 1AX. _____________________________________________________________________ This e-mail has been scanned for viruses by Verizon Business Internet Managed Scanning Services - powered by MessageLabs. For further information visit http://www.verizonbusiness.com/uk