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Captain's Blog


Marine Order 504: Fatigue management is no longer just a logbook entry
Marine Order 504 now requires risk-based fatigue management for DCVs. Learn what changed, what AMSA inspectors ask, and how operators must respond.

Captain Cal Callahan
Mar 1


AMSA Exemption 31 Fishing Crew Compliance
AMSA Exemption 31 Fishing Crew Compliance now requires re-approval by 31 Jan 2026. Learn your options for pre-USL fishing certificates and staying compliant.

Captain Cal Callahan
Mar 1


Understanding the Future of Marine Safety: E-Flares in Australia
In recent years, electronic visual distress signals – commonly known as E-Flares – have emerged as a popular alternative to traditional pyrotechnic flares for marine safety. Compact, reusable, and easy to handle, these battery-powered devices emit a bright strobe light visible for miles.

Captain Cal Callahan
Aug 8, 2025


Drug & Alcohol Policy for DCV Operators – What You Need to Know
All Domestic Commercial Vessel (DCV) operators – whether you run a Class 1, 2, 3, or 4 vessel – will be required to include a Drug and Alcohol Policy in your Safety Management System (SMS).

Captain Cal Callahan
Apr 21, 2025


Maritime Fatigue: Finding the Equilibrium for Safe Voyages
Fatigue management is a critical component of safe vessel operations, impacting crew performance, decision-making, and maritime safety.

Captain Cal Callahan
Mar 16, 2025


All Aboard for a Deep Dive: Understanding Vessel Draft Marks
The numbers painted vertically on the sides of the vessel – draft marks – play a crucial role in maritime safety.

Captain Cal Callahan
Mar 3, 2025


Lifejackets and the Mariner
Lifejacket regulations can be pretty confusing, and each State and Territory has its own take on the regulation – here we break it down.

Captain Cal Callahan
Jan 17, 2025


Marine Order 504 Now Live in the Small Vessels Manual eBook
The Small Vessels Manual eBook has now integrated the latest changes from Marine Order 504.

Captain Cal Callahan
Jan 14, 2025


Navigating Changes in Maritime Legislation: Marine Order 504
The Australian Maritime Safety Authority (AMSA) has introduced a series of updates to key maritime legislation, impacting vessel safety and operations. Among the changes are: Lifejackets : Updates to standards and usage requirements. Maintaining Watertight and Weathertight Integrity : New guidelines for the construction and operation of vessels. Certificates of Survey (CoS) : Clarifications on survey requirements for domestic commercial vessels. Updated Marine Order 504 : Maj

Captain Cal Callahan
Dec 4, 2024


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


Australian Maritime Certificates of Competency
For students pursuing a Certificate of Competency (CoC) in maritime operations, the Small Vessels Manual stands as an essential guide.

Captain Cal Callahan
Sep 23, 2024
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