Insights

Welcome to INSIGHTS, a curated space at SEAMEN.ES dedicated to the fascinating world beyond the technical daily routine. Here, we dive deep into the culture, history, and curiosities that define the maritime industry.

What you will uncover in our Insights section:

Nautical History & Legends: Discover the stories of legendary voyages, historical turning points, and the traditions that shaped modern shipping.

Fascinating Facts & Curiosities: From mysterious ocean phenomena to surprising trivia about life at sea, we bring you the stories that spark wonder.

Technological Breakthroughs: Learn about the engineering marvels and innovations that are currently transforming the maritime landscape.

Pro Tips & Lifehacks: Practical advice and clever solutions that benefit both maritime professionals and passionate sea travelers.

Our goal is to broaden your horizons and offer a deeper appreciation for the rich heritage and constant evolution of the sea. Whether you are seeking a moment of professional inspiration or just looking to satisfy your curiosity, this is your go-to destination for all things nautical.

Feed your curiosity and explore the secrets of the sea. Join our INSIGHTS community and discover the hidden stories behind the maritime world.

Oct282026 by Dmytro MelnikovNo Comments

LNG Cargo Compressor: Working Principle & Fix | SEAMEN

Gas Carriers, Insights

Working Principles of the Cryogenic LNG Cargo Compressor Boil-off gas management aboard modern liquefied natural gas carriers relies on the continuous, precision operation of the shipboard LNG cargo compressor. Unlike LPG reciprocating machinery, LNG compressors handle cryogenic methane vapor (CH4) at temperatures down to -140°C and colder. Designed as high-speed centrifugal or multi-stage radial units driven by electric motors or steam turbines, these machines rotate at speeds between 12,000 and 15,000 RPM. They are engineered to compress large volumetric flows of cryogenic gas without mechanical seizing, seal degradation, or thermodynamic surging. Onboard an LNG tanker, compressor installations are segregated into two distinct operational duties under the IGC Code: Low-Duty (LD) compres...

Oct172026 by Dmytro MelnikovNo Comments

AI in Maritime Operations: Free Microsoft Office Add-in Tool

Insights, Posts

The Shift: How Seafarers Became Office Workers at Sea In today’s maritime industry, the daily routine of a commercial vessel's crew-especially top officers like Chief Engineers, Captains, and Chief Mates-has shifted dramatically. While shipping companies, ship management agencies, and international maritime authorities frequently emphasize digital transformation and paperless operation, every maritime professional knows the daily reality - vessel administration and paperwork continue to expand exponentially. Chief Engineers and Master Mariners spend hours handling dozens of official emails, filling out complex reporting spreadsheets, updating planned maintenance systems (PMS), compiling bunker consumption reports, and drafting class compliance documents. Most of these urgent req...

Sep302026 by Dmytro MelnikovNo Comments

What PSC Inspectors Check During a Incinerator Inspection

Insights

A marine incinerator is a critical environmental protection system on board a vessel, designed for the safe thermal destruction of solid domestic waste, packaging materials, and waste oil (sludge). In accordance with the requirements of the MARPOL Convention (Annexes V and VI) and IMO resolutions, strict standards are enforced regarding the technical condition and maintenance of incineration plants. Port State Control (PSC) inspectors, representatives of classification societies, and flag state administrations pay close attention to incinerators during annual surveys and unexpected inspections. Below is a detailed guide on how to properly prepare for an inspection and what inspectors examine on marine incinerators. Preparing the Marine Incinerator for Inspection Thorough prep...

Sep292026 by Dmytro MelnikovNo Comments

Troubleshooting Incinerator:Common Faults, Causes, Solutions

Insights

Efficient and safe operation of a marine incinerator is critical for complying with environmental requirements under MARPOL (Annexes V and VI) regarding waste and sludge disposal on board. During continuous operation under rolling conditions at sea and when burning aggressive media (such as oil sludge, waste oils, and solid refuse), marine engineers frequently encounter specific technical failures. Below is a detailed look at 5 common marine incinerator faults, their likely root causes, and practical troubleshooting recommendations. 1. Flame Failure (Ignition Failure or Burner Flame-Out) Symptoms The incinerator burner attempts to start, but after a brief flash of flame, safety interlocks trip, the combustion process stops, and a "Flame Failure" alarm illuminates on the co...

Sep282026 by Dmytro MelnikovNo Comments

Incinerator: Purpose, Design, and Working Principle on Board

Insights

A marine incinerator is a vital piece of shipboard equipment designed for the thermal destruction and disposal of solid waste and waste oil (sludge) directly on board a vessel. Waste disposal at sea is strictly regulated by the International Convention for the Prevention of Pollution from Ships (MARPOL 73/78, Annex V) and IMO standards (MEPC 76(40)). The use of modern incinerators allows vessels to comply with international environmental regulations, significantly reduce the volume of stored waste on board, and minimize waste disposal fees at port reception facilities. What is a Marine Incinerator Used For? During normal ship operations, various types of waste are continuously generated. According to IMO requirements, marine incinerators are built to burn two primary waste ca...

Sep272026 by Dmytro MelnikovNo Comments

Slide Fuel Valves: Principle, Advantages, IMO NOx Compliance

Insights

In modern merchant shipping and the operation of low-speed two-stroke marine diesel engines, optimizing combustion efficiency while satisfying strict International Maritime Organization (IMO) environmental regulations is a top priority. A critical technological advancement that has significantly improved heavy fuel oil atomization and minimized harmful emissions is the slide fuel valve. The Problem with Conventional Fuel Injectors: The Sac Volume In traditional marine diesel fuel injectors, a small unvented space exists inside the nozzle tip beneath the needle seat - commonly referred to as the "sac volume" or "cavity." When the high-pressure fuel injection pump completes its stroke and the fuel valve needle seats under spring pressure, a minor quantity of residual fuel remai...

Sep262026 by Dmytro MelnikovNo Comments

Fresh Water Generator Faults: Common Problems and Solutions

Insights

Reliable operation of a marine Fresh Water Generator (FWG) directly dictates vessel autonomy, operational efficiency, and the safety of the main propulsion plant. During the operation of vacuum-type evaporators—which utilize waste heat from main engine jacket cooling water—marine engineers frequently encounter specific technical issues. Below is an expert SEO-optimized troubleshooting guide detailing 5 of the most common marine fresh water generator faults, their root causes, and practical corrective actions for shipboard engineers. More information on 5 Common Marine Fuel Purifier Faults and How to Fix Them Summary Table of Marine Fresh Water Generator Faults Fault / ProblemLikely Root CauseRecommended Action1. Loss of Vacuum in Evaporator Shell• Ejector pump pressur...

Sep252026 by Dmytro MelnikovNo Comments

5 Common Marine Fuel Purifier Faults and How to Fix Them

Insights

Safe and efficient operation of marine diesel engines directly depends on the quality of heavy fuel oil (HFO) purification. Any failure in the operation of centrifugal purifiers leads to water and mechanical impurities entering the fuel system, causing accelerated wear of high-pressure fuel pump (HPFP) plunger pairs, fuel injector clogging, and severe damage to the cylinder-piston group. Below are 5 of the most common faults encountered in marine fuel purifiers, their root causes, and practical solutions for troubleshooting. 1. Loss of Water Seal and Fuel Overflow to Drain Symptoms Unpurified fuel stops flowing to the daily service tank and begins discharging through the overflow pipe or escaping together with the separated water. More information on Seawater Reverse Os...

Sep242026 by Dmytro MelnikovNo Comments

Seawater Reverse Osmosis: Principle, Design, and Maintenance

Insights

Freshwater autonomy on board commercial vessels is essential for safe, economical, and flexible operations. Alongside traditional vacuum evaporators, marine Seawater Reverse Osmosis (SWRO) desalination systems are increasingly favored across modern merchant and offshore fleets. This comprehensive guide explores the physical principles of membrane desalination, the step-by-step operation of marine SWRO plants, key system components, and essential maintenance practices. What is a Marine Seawater Reverse Osmosis (SWRO) System? A marine reverse osmosis system is an advanced membrane-based purification plant designed to desalinate high-salinity seawater into pure, potable water that complies with international standards, such as WHO drinking water guidelines or national quality st...

Sep232026 by Dmytro MelnikovNo Comments

Fresh Water Generator: Principle, Design, and Maintenance

Insights

On modern commercial vessels, autonomy in fresh water supply is a critical factor for safe and efficient navigation. To provide the crew with drinking water and to replenish technical water for shipboard systems (such as steam boilers and engine cooling circuits), marine Fresh Water Generators (FWG) are universally deployed. This article provides a comprehensive overview of the design, working principle, technical parameters, and operational practices for marine vacuum-type desalination plants, based on a standard 20 tonnes per day (20 TPD) installation. What is a Marine Fresh Water Generator and Why is it Needed? A marine Fresh Water Generator (FWG) is a waste heat recovery installation designed to produce distilled fresh water from seawater. More information on Marine Fu...