Captain’s Mode Maritime
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Welcome to Captain’s Mode Maritime ⚓
Your trusted source for maritime education, navigation tutorials, and seafaring insights. We publish practical guides on ship handling, navigation, practical seamanship, safety guides, and life at sea — written for cadets, deck officers, and maritime professionals seeking accurate, easy-to-follow content materials.
Recently Published
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OWS 15 ppm Alarm: Troubleshooting False High Readings
It is 0300, your OWS 15 ppm alarm has tripped for the third time this watch, and the discharge water looks clear through the sight glass. Before you condemn the monitor or start looking for a way…
Seaman’s Notes
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CPP Bow Thruster Zero Pitch: Zero Thrust & Troubleshooting
Your bow thruster lever sits at neutral, yet the bow of your laden bulk carrier…
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Radar Parallel Indexing: How to Use PI for Safe Navigation in Confined Waters ⚓
Fog reduces visibility to 200 metres at 0200H, and the channel ahead narrows to a…
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ECDIS Safety Depth vs Safety Contour: A Practical OOW Configuration Guide
Safety Depth and Safety Contour are not the same setting. Safety Depth makes potentially unsafe…
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Echo Sounder Draft Offset: DBT, DBK and DBS Explained for Safe Navigation
An echo sounder draft offset determines the reference point from which a depth reading is…
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Emergency Steering Gear Drill: Bridge-to-Steering Flat Changeover Guide
An emergency steering changeover is the controlled transfer of rudder control from the bridge to…
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Radar Performance Monitor (PM) Testing and Blind Sector Plotting
A radar performance monitor provides a means of checking transmitter and receiver performance against a…
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OOW Guide to GNSS Spoofing: Detecting and Navigating False GPS Fixes
Global Navigation Satellite System (GNSS) spoofing has become an operational reality. Operating in choke points…
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USCG MMC Renewal Guide: Sea Service Rules, Grace Periods & Common Rejections
To renew a USCG Merchant Mariner Credential (MMC), mariners must submit Form CG-719B along with…
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⚓ What Is Squat in Ship Navigation? Formula, Causes, & UKC Standards Explained
Squat is the increase in a ship’s draft caused by hydrodynamic sinkage as speed increases…
Mariner’s Handbook
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⚓ Deck Officer vs Engine Officer: Which Career Should You Pick?
Choosing between becoming a deck officer and an engine officer is one of the most…
