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Jurisdiction of Coastal States over Foreign Ships and Crew
A foreign ship lives under two legal systems at once: the flag state and the coastal state. Learn where coastal state power begins and ends — from internal waters to the high seas — and how to act when local authorities come on board.
Introduction to Tides
A practical seamanship lesson on tidal forces, spring and neap tides, tidal datums, streams, the Rule of Twelfths, and safe use of tide predictions.
How a Bow Thruster Works
A practical lesson on tunnel-thruster reaction, drive components, blade pitch, installation, safe operation, maintenance and low-speed limitations.
Marine Boiler Maintenance: Cleaning, Blowdown, Gauge Glass and Burner Care
A video lesson with study notes on water washing, tube cleaning, soot blowing, boiler and scum blowdown, gauge glass blowdown, burner maintenance and furnace defects — with two step-by-step simulators and a 36-question self-test.
Centrifugal Separators: Purifiers and Clarifiers in the Engine Room
How the disc-stack centrifuge keeps fuel and lubricating oil fit to burn — gravity discs, water washing, sludge cycles and the purifier-versus-clarifier decision.
Dynamic Positioning: Systems, Operations & DPO Training
An introduction to vessel station-keeping, the four core parts of a DP system, the DPO certification pathway, and opportunities to improve training.
DNV-RP-E306: Dynamic Positioning Vessel Design Philosophy Guidelines
DNV recommended practice, developed with the Marine Technology Society DP Technical Committee, on designing DP vessels for their industrial mission rather than for class notation alone.
DNV DP Capability Level 1 Application: Online Station-Keeping Calculation
DNV's online application for DP Capability Level 1 to DNV-ST-0111 — a prescriptive, comparable calculation of station-keeping capability for ship-shaped single-hull vessels.
IMO MSC.1/Circ.1580: Guidelines for Vessels and Units with Dynamic Positioning (DP) Systems
The current IMO guidelines for DP vessels and units, approved by MSC 98 on 16 June 2017, superseding MSC/Circ.645 and introducing the DP Verification Acceptance Document.
Fundamentals of the Rules of the Road
How the COLREGs are structured and why every officer must internalize Rules 5–8 before anything else.
Glossary: Terms of the Ship
From abaft to yaw — the essential vocabulary of deck and engine, defined the way it is used at sea.
Passage Planning: The Four Stages
Appraisal, Planning, Execution, and Monitoring — the IMO framework for a safe berth-to-berth passage plan.
Duties of the Officer of the Watch
The standing responsibilities of the OOW: safe navigation, collision avoidance, and the condition of the vessel at all times.
SOLAS Fire Safety: Structure of a Shipboard Response
How SOLAS Chapter II-2 shapes fire prevention, detection, and response on board — and what the muster list demands.
Life-Saving Appliances: Weekly and Monthly Checks
A practical inspection rhythm for lifeboats, liferafts, and pyrotechnics that keeps the vessel survey-ready.
Cargo Stowage: Stability, Segregation, Securing
The three questions every loading plan must answer before the first unit comes alongside.
Bunkering: A Safe Transfer Procedure
From pre-transfer conference to final draught survey — the discipline that prevents oil pollution.
Engine Room Watchkeeping: The Daily Rhythm
What a well-run engine room watch actually looks like, hour by hour.
Glossary: Standard Bridge Orders
The wheel and engine orders every deck officer must give — and every helmsman must repeat back.