SeaNav – Portuguese charts

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.

Lisbon Harbour entrance

Improving Compass accuracy on iOS devices

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.

Remove all Magnetic Material from your 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.

Rotate Your Phone in a Figure 8 Motion

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.

Enable Compass Calibration in the settings app

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.

  1. Open the “Settings” app
  2. Tap “Privacy”
  3. Tap “Location Services”
  4. Tap “System Services”
  5. Enable “Compass Calibration”

Disable and Re-enable Location Services

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.

  1. Open the “Settings” app
  2. Tap “Privacy”
  3. Tap “Location Services”
  4. Disable and Re-enable “Location Services”

Restart your iPhone

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.

How to Restart Your iPhone

Disable True North in the settings app

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.

  1. Open the “Settings” app
  2. Scroll down and tap on the “Compass” app
  3. Disable “Use True North”

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.

AIS coverage additions for Spring 2021

We are constantly working to increase our real time AIS coverage for our apps and services. Over the last month we have added over 30 new areas adding an additional 5000 live AIS targets to our global total of over 75,000 per hour.

Number of ShipsArea
30Firth of Clyde, UK
50Faroes, UK
20SE Ireland
20SW Ireland
100Aegean Sea, Greece
100Valencia, Spain
200Gibraltar and Southern Spain
100Antwerp, Belgium
200Caspian Sea
300Persian Gulf
600Japan, multiple areas.
200River Plate, S.America
150Sao Paulo, S.America
20Salvador, S.America
31SE Australia
30Avalon Beach,Australia
27Sutherland, Australia
21Gulf of Mexico – Matamoros