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Captain's Blog


S-100: The Next Generation of Electronic Charts Is Coming to Australia
If you’re training or working in the near-coastal space, you’ll hear a lot more about S-100 over the next few years. This isn’t marketing hype or 'future tech' – it’s a fundamental change to how hydrographic and navigational data is produced, distributed and displayed.

Captain Cal Callahan
Jan 4


SouthPAN: A New Era of Precision Navigation for Australian Mariners
AMSA has released a new Marine Notice announcing the arrival of a Satellite-Based Augmentation System (SBAS) for our region – a game-changer for positioning accuracy and reliability on small vessels and large ships alike.

Captain Cal Callahan
Nov 28, 2025


Fighting Back Against GPS Spoofing and Jamming – A Turning Point for Maritime Navigation
Reports of GPS spoofing and jamming along the Southern U.S. border and interference in other strategic waterways are stark reminders that GNSS disruption is no longer theoretical — it’s happening, and it’s affecting shipping. The message is clear: our navigational resilience is being tested in the real world.

Captain Cal Callahan
Sep 17, 2025


An Avoidable Grounding in the Red Sea: GPS Spoofing and the MSC Antonia
Only a few weeks ago the MSC Antonia ran aground near Jeddah Port after a confirmed GPS spoofing attack – highlighting growing cyber risks in global shipping.

Captain Cal Callahan
May 26, 2025


Navigating with the Best: Bridge Equipment Essentials
Let us have a look at some top tips on bridge equipment every skipper wishes they had on the bridge of their vessel.

Captain Cal Callahan
Nov 15, 2024


Navigating the Future with Virtual AIS eAtoN
Ahoy, fellow navigators! As we sail further into the digital age, the maritime world is witnessing an exciting evolution in our approach...

Captain Cal Callahan
Oct 11, 2024
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