We monitor the Humber Windfarms with our AISWatch service and captured the collision today between Solong ( cargo ship in green) and the Stena Immaculate ( oil tanker in red).
You can watch the AISWatch replay of the incident in 3D here:-
Australian and French vector (ENC) charts are now available for SeaNav.
The French charts include live tidal stream information up to 7 days ahead, especially important for the northern coast and channel. Here is an example for the Golfe du Morbihan in Britanny where PocketMariner’s Captain has personally experienced the very fast tidal flows :-
The free version of SeaNav has demo routes which let you try all the advanced features such as AIS (collision detection), Weather, Wind and Depth displays, Tidal Streams, Augmented Reality and of course the charts for free. New demo routes have been added for France and Australia. The demo route for Australia is from Mooloolaba on the Sunshine Coast:-
You can get SeaNav for iPhone, iPad and Apple Silicon Macs free from the AppStore here now:-
There is a great short video by “East Coast Sailing” which recommends our Boat Beacon & SeaNav apps, and includes a very novel and useful way of using a SeaNav route to plan and explore the weather (wind and waves) on the route using full screen Windy on a laptop. Well worth the watch.
You can now track, record and replay races with Boat Beacon on Android and iOS using groups and the following web page:-
https://boatbeaconapp.com/ais/race/MYGROUPNAME
Where MYGROUPNAME is your group name. The group hashtag name is anything you like up to 20 capital letters (no spaces). Set your group name in Boat Beacon/Settings/My Trip Details.
The initial view shows the last know position of all boats in the group. Click on “Start race” to show and track live positions. A race timer displays how long the race has been running for. Click on “Stop race” to end and save the race information to a local file.
When you stop the race two timestamped files are exported to your local desktop, a .kml file that can be used to view the tracks in Google Earth and a .geojson file which can be re-loaded up to the web page to replay the race using the “Choose file” button.
When a previously recorded race is loaded the following controls appear
A slider to fast forward and back through the race and tracks. A Playback speed slider to set the speed of the playback and a Play/Stop button. Click the Play button to start replaying the race from the slider position. There is also a checkbox top right “GPS Tracks” to turn the tracks on and off.
Here is the PocketMariner YC page – currently both boats ashore.
https://boatbeaconapp.com/ais/race/PMYC
There is a recorded track you can download to your desktop and load up to try here ( N.B this was a cycle test track with one “test” boat ):-
PMYC_2024-04-06T07_04_39Z.geojson
We are looking for early adopters to gather feedback on what other features or improvement could be made to make the new Group Race feature useful. Please let us know if you try it and how you get on by emailing help@pocketmariner.com with the subject “Group races”.
We are also looking at the possibility of tracking yachts and dinghies during club races using inexpensive small GPS trackers like the one below as an alternative to having the Boat Beacon app and are looking for a volunteer Yacht club to try this with.
The basic idea is for the tracker and sim card to be cheap enough for a club to have enough of these devices to hand out to all race participants who don’t have Boat Beacon so they can follow the tracks of all participating yachts and dinghies on screen at the club house and review the race afterwards.
Our tests of the trackers show they can run for around 12 hours on one charge with position updates every 5s (12m accuracy at 5 Knots). We have sourced non-expiring IoT data sim cards which work on all networks with enough data pre-installed for 5 million fixes. We are now looking to try with real races and need a volunteer Yacht club based in the UK. We will supply the trackers for the trial at cost and the service for free. The raw cost per GPS tracker device including the lifetime sim card is around £75. If you are interested please contact help@pocketmariner.com with the subject “Race Trackers”.
Boat Beacon must be in Sailing mode to maintain the AIS feed when it is in the background ( e.g. when you are viewing the Aqua Map chart) on your device.
The primary purpose of AIS is monitoring and alerting for potential collisions. Boat Beacon’s AIS service has two key advantage, instant ship details and over the horizon detection ( out to 30NM). With VHF AIS only the MMSI number, position and speed appear initially and it can take up to 6 minutes for the ship names and type details to be received. With Boat Beacon the names, size and type are available instantly with position so you can call them up by name over VHF radio and check their intentions. VHF AIS receivers can only see as far as the visual horizon which is typically about 12NM whereas Boat Beacon’s multiple shore antennas at high elevation can provide coverage out to 30NM in popular areas.
Boat Beacon has configurable options for collision detection distance, time and alerting in Settings.
You can also configure collision avoidance alert parameters in Aqua Map’s settings:-
SeaNav now has vector charts available for Portugal, The Azores and the Madeira islands based on the latest official Hydrographic Office data. These work seamlessly together with the existing charts for Spain and France. The charts include the full range of scales down to harbour approaches.
You can download the new Portuguese charts now by going to Settings in SeaNav and selecting SeaNav Chart Store/Portuguese Charts.
The simplest way to share a route with one of your other devices is to export a route via email to an email address you can read on the other device. The other way is to use Dropbox if you have a Dropbox account. Dropbox is bit more “automatic” once you have logged in and lets you browse your saved routes.
This article explains how to do it via email.
Tap the “zigzag” routes icon on the bottom toolbar and select Manage routes. Select the route you want to export by tapping the i button on its right. Then tap the share icon on the left toolbar ( square with arrow pointing out of it). Select Email as kmz and then fill out the email address to send to.
Open the email on your other device. When you open the email there will be a kmz file attached at the bottom of the email. Tap the kmz file image to download it
and then tap the share button bottom left to open it (2) .
Choose what you want to open the download with – scroll along or tap more if you can’t see SeaNav in the initial list of icons – choose SeaNav and it will import it and open SeaNav on the new route.
As the new boating season starts we have added a new, unique and useful feature for our popular Boat Beacon app – “Hey Siri, Man Overboard”
Boat Beacon now supports several Siri voice commands which you can use with your device or on your Apple Watch (requires iOS 12 or later and WatchOS7 or later). This lets you use Boat Beacon’s features hands free. The current list of voice commands are:-
You can add the commands to Siri from the Boat Beacon app in settings or directly in the Siri App itself. They work directly with Siri without having to mention “Boat Beacon” in the command. You can also customise the commands to respond to your own preferred phrases or language.
Tap the Add to Siri button in Boat Beacon settings to see the list of commands that are active and more that you can add. “Drop anchor” and “Start sailing” have been added in the screenshot. To add another command just tap its “Add to Siri” button. Once added you can ask Siri to do them at any time on your device or your Apple Watch.
You can also edit the commands that have been added by tapping the “Added to Siri” button next to them and add additional speech commands to launch them. For instance add “On board” as an addition/alternative to “Start sailing. You can type the phrase or enable dictation and speak it. Useful also for setting phrases in other languages or using alternative phrases that Siri finds it easier to understand.
You can view and delete the commands in the Siri Shortcuts app on your phone. Once added the commands work automatically on your Apple Watch, no more set up required. If you want to see them in the actual Siri app on your Apple Watch as well then you can set “Show on Apple Watch” in the Shortcut settings in the Siri app on your phone.
Try it now. Add “Man Overboard” and then say “Hey Siri, Man Overboard” to your iPhone/iPad or your watch. It will sound an alert, mark the position and start tracking it for you.
Say “Man Overboard” again to clear the alert. N.B. This will still leave Boat Beacon in sailing mode.
There is a User guide in the app and online here:-
Our ship tracking network uses a global network of shore and ship-based radio stations, which receive signals from the AIS system that ships use to broadcast their positions as they travel. Our receiver stations share the ship positions with our cloud-based data server, which pushes them onwards and out to our apps and web services.
We are continuously working on increasing the coverage of our real-time AIS receiver station network. During the last three months we have added more than 100 new AIS stations across 5 continents bringing our live ship coverage to over 80,000 ships. We have supplied the AIS receiver for free for many of these sites. New volunteers are always welcome to join our AIS Network.
Here is a list of the most recent stations we have set up and a snapshot of our global coverage Q1 2022
If you are interested in adding coverage for your area, please read our Cover Your Area information – we can often provide the equipment free of charge.
The internal compass of your iPhone is a very useful tool. Unfortunately, it is very easy for the compass to become unaligned, particularly when indoors. The following are a few solutions to help improve the compass accuracy of your iPhone or iPad device.
Your iPhone contains a Magnetometer that is used by the internal compass. Any interference from a nearby magnetic source may affect the compass readings. Make sure to remove any nearby magnets. Keep in mind iPhone cases and pop sockets often have magnetic parts built in. If your device becomes unaligned due to the magnet then removing the source will help but you may need to restart your device.
One of the calibration methods your compass utilizes includes motion over time, whether you are walking around or pulling your phone out of your pocket. One trick to help re-align the compass is to shake your phone or rotate it in a large figure eight motion. For a small misalignment this will often help fine-tune the accuracy of your compass.
In iOS 13 and later there is a privacy setting to allow your compass to use location services to help calibrate your devices compass. By default, this setting is disabled. Enabling this feature is highly recommended for good compass accuracy.
Refreshing Location Services can help your device clear any GPS errors from previous readings. Another trick to improve compass accuracy is to simple disable and re-enable Location Services.
When your compass becomes misaligned sometimes the fastest method of realignment is to simple restart your device. This may seem tedious, but it is the quickest and most reliable method for restoring your compass to provide optimal readings.
By default, your device will utilize True North for all compass readings. Depending on the compass reading you are trying to get it may make sense to temporarily disable True North and use Magnetic North for a while.
Hopefully some of these tips help you attain accurate compass readings from your device. If your device continues to have issues, there may be an additional software or hardware problems with the phone itself. Please contact Apple Support for any questions about calibrating your compass or to determine if your device may need repair.
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