Comments on: Class B AIS Underway http://www.navagear.com/2008/10/class-b-ais-underway/ Tech and Tools for Cruisers Tue, 09 Mar 2010 21:20:33 -0800 http://wordpress.org/?v=2.8.5 hourly 1 By: Larry Douglas http://www.navagear.com/2008/10/class-b-ais-underway/comment-page-1/#comment-2599 Larry Douglas Sun, 22 Feb 2009 07:17:44 +0000 http://www.navagear.com/2008/10/class-b-ais-underway/#comment-2599 The ability of some AIS equipment to not receive Class B AIS data is no surprise, since it is newly approved and Class A has been out for a while. The 'early adopters' of the Class B will (painlessly, hopefully) determine its limitations and shortcomings, and the needed changes will be made - eventually. It's just as well that Class B is voluntary (for now...) since it's to be expected that problems will exist that pre-adoption tests will not have uncovered. Having been an electronic technician for many years I've seen numerous examples of this. The ability of some AIS equipment to not receive Class B AIS data is no surprise, since it is newly approved and Class A has been out for a while. The ‘early adopters’ of the Class B will (painlessly, hopefully) determine its limitations and shortcomings, and the needed changes will be made – eventually. It’s just as well that Class B is voluntary (for now…) since it’s to be expected that problems will exist that pre-adoption tests will not have uncovered. Having been an electronic technician for many years I’ve seen numerous examples of this.

]]> By: More Class B AIS On-The-Water Testing | Navagear.com http://www.navagear.com/2008/10/class-b-ais-underway/comment-page-1/#comment-2431 More Class B AIS On-The-Water Testing | Navagear.com Tue, 16 Dec 2008 23:27:31 +0000 http://www.navagear.com/2008/10/class-b-ais-underway/#comment-2431 [...] weeks, doing some repairs and engine maintenance. So I haven’t had a chance to do any further “underway” testing of my new Shine Micro RadarPlus AIS-BX Class B AIS [...] [...] weeks, doing some repairs and engine maintenance. So I haven’t had a chance to do any further “underway” testing of my new Shine Micro RadarPlus AIS-BX Class B AIS [...]

]]> By: Vessel Traffic Service Blind to AIS Class B! | Navagear.com http://www.navagear.com/2008/10/class-b-ais-underway/comment-page-1/#comment-2371 Vessel Traffic Service Blind to AIS Class B! | Navagear.com Wed, 03 Dec 2008 01:29:19 +0000 http://www.navagear.com/2008/10/class-b-ais-underway/#comment-2371 [...] that’s been my experience while testing my own Class B equipment, and at the recent eNavigation conference in Seattle I was able to confirm that my experience is [...] [...] that’s been my experience while testing my own Class B equipment, and at the recent eNavigation conference in Seattle I was able to confirm that my experience is [...]

]]> By: USCG Issues Safety Alert On Class B AIS | Navagear.com http://www.navagear.com/2008/10/class-b-ais-underway/comment-page-1/#comment-2281 USCG Issues Safety Alert On Class B AIS | Navagear.com Tue, 04 Nov 2008 02:32:09 +0000 http://www.navagear.com/2008/10/class-b-ais-underway/#comment-2281 [...] my preliminary testing underway, I experienced a bit of this: My vessel appeared on the bridge of Washington State Ferry Spokane, [...] [...] my preliminary testing underway, I experienced a bit of this: My vessel appeared on the bridge of Washington State Ferry Spokane, [...]

]]> By: Tim Flanagan, Managing Editor http://www.navagear.com/2008/10/class-b-ais-underway/comment-page-1/#comment-2275 Tim Flanagan, Managing Editor Fri, 31 Oct 2008 04:46:35 +0000 http://www.navagear.com/2008/10/class-b-ais-underway/#comment-2275 Not a flaw...that's all part of the "Class B" specification: lower power, less-frequent transmissions, less detail about the vessel. Not a flaw…that’s all part of the “Class B” specification: lower power, less-frequent transmissions, less detail about the vessel.

]]> By: Tom Elliott http://www.navagear.com/2008/10/class-b-ais-underway/comment-page-1/#comment-2274 Tom Elliott Thu, 30 Oct 2008 23:22:39 +0000 http://www.navagear.com/2008/10/class-b-ais-underway/#comment-2274 Most of the drift netting, which should be stopped all together, this time of year is for chum. Most of the chum are caught closer to shore and out of the shipping lanes. As you said the some guys get pulled pushed around but I dont think fishing in the lanes is the right way. Why does the unit only broadcast every 30 seconds??? seems like a design flaw to me. Most of the drift netting, which should be stopped all together, this time of year is for chum. Most of the chum are caught closer to shore and out of the shipping lanes. As you said the some guys get pulled pushed around but I dont think fishing in the lanes is the right way. Why does the unit only broadcast every 30 seconds??? seems like a design flaw to me.

]]> By: Richard Rodriguez http://www.navagear.com/2008/10/class-b-ais-underway/comment-page-1/#comment-2273 Richard Rodriguez Wed, 29 Oct 2008 21:51:05 +0000 http://www.navagear.com/2008/10/class-b-ais-underway/#comment-2273 Hi Tim, A small technical point that I make in every class. Tide is the vertical movement of water and reaches a stand. Current, the effects of set and drift, is the horizontal movement of water. Here ends today's lesson. Richard Hi Tim,

A small technical point that I make in every class. Tide is the vertical movement of water and reaches a stand.

Current, the effects of set and drift, is the horizontal movement of water.

Here ends today’s lesson.

Richard

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