Maritime Knowledge Base
Browse questions and answers across marine machinery, merchant navy careers, shipboard operations and maritime glossary terms.
Browse by Category
Marine Machinery
Troubleshooting guides for pumps, boilers, purifiers, compressors and auxiliary systems.
Merchant Navy Careers
Questions about joining the merchant navy, exams, cadetships, ranks and sea-time.
Maritime Glossary
Plain-English definitions of shipping, engine-room, navigation and regulatory terms.
Shipboard Operations
Practical Q&A for watchkeeping, safety, maintenance routines and onboard documentation.
Results for "Purifier"
Why is my fuel or oil purifier not separating properly?
The usual causes of poor purifier separation — feed rate, temperature, gravity disc and water seal, sludge and bowl condition — and how to work through them one at a time.
Marine MachineryHow does a marine centrifugal oil purifier work?
A marine purifier cleans fuel and lubricating oil by spinning it at high speed so that water and solids separate out — here is the working principle.
Marine MachineryWhat is the difference between a purifier and a clarifier?
A purifier separates both water and solids from oil, while a clarifier removes only fine solids from oil that contains little or no water — often the two run in series.
Shipboard OperationsWhat should be checked during engine-room watchkeeping rounds?
How to make an engine-room round count — comparing live readings against normal ranges and catching trends before they become failures.
Merchant Navy CareersShould I choose the deck or engine department?
How the deck and engine career paths differ — daily work, skills, ranks and progression — so you can pick the one that fits you.
Merchant Navy CareersHow do you become a marine engineer on ships?
Becoming a marine engineer means entering the engine department through a cadetship or engineering degree and progressing by sea time and Certificates of Competency.
Marine MachineryWhy is the main engine lubricating oil pressure low?
Low lubricating oil pressure is a serious alarm that threatens the bearings — the cause is usually in the pump, the filters, the oil itself, or a leak.
Marine MachineryHow does a marine incinerator work and what can it burn?
A marine incinerator burns the ship's waste oils, sludge and solid garbage in a combustion chamber, subject to MARPOL rules on what may be incinerated and where.
Marine MachineryHow does a ship's fuel oil system store, treat and deliver fuel to the engine?
The fuel oil system takes bunkers from the storage tanks, settles and purifies them, heats heavy fuel to the right viscosity, and delivers clean fuel under pressure to the engine.
