Shipboard Fire Safety: Fire Types, Extinguishers and Breathing Apparatus for Seafarers

Fire is one of the most dangerous emergencies that can occur at sea. Unlike incidents on land, fires on vessels develop in confined environments where evacuation options are limited and response times are critical. For this reason, seafarers must understand how fires start, how they spread, and how to respond quickly with the correct equipment.

Training programs such as the STCW Fire Prevention and Fire Fighting (FPFF) course help crew members build these essential skills through both theory and practical drills. Beyond certification requirements, understanding fire behavior and firefighting tools can make the difference between controlling a small incident and facing a major onboard emergency.

Understanding the Basics of Shipboard Fires

Most fires occur when three elements combine: heat, fuel, and oxygen. This relationship is often called the fire triangle. Removing any one of these elements can stop combustion and extinguish the fire.

On ships, the presence of fuels, electrical systems, and confined machinery spaces increases the likelihood of fire hazards. Engine rooms contain flammable liquids, electrical wiring runs throughout the vessel, and accommodation areas contain ordinary combustible materials such as bedding and furniture.

Because these materials behave differently when they burn, fires are classified into several categories.

The Different Types of Shipboard Fires

Fire classification helps determine which extinguishing method is most effective.

Class A fires involve ordinary combustible materials such as wood, paper, textiles, and plastics. These fires are common in living areas or storage spaces. Water-based extinguishing methods are typically effective because they cool the burning material.

Class B fires involve flammable liquids such as fuel, lubricating oil, paints, or solvents. These fires are particularly dangerous in engine rooms and fuel storage areas. Foam or carbon dioxide extinguishers are often used to smother the flames and remove oxygen from the combustion process.

Class C fires are electrical fires caused by energized equipment such as wiring, control panels, or motors. Because water conducts electricity, these fires require non-conductive extinguishing agents such as dry chemical powder or carbon dioxide.

Class D fires involve combustible metals. While less common on vessels, certain equipment or cargo may contain materials capable of producing these high-temperature fires. Special extinguishing agents are required to control them.

Correctly identifying the type of fire is essential because using the wrong extinguishing agent can make the situation worse.

Choosing the Right Fire Extinguisher

Ships are equipped with both portable and fixed firefighting systems designed to combat different types of fires. Portable fire extinguishers are typically the first line of defense during small incidents.

Water extinguishers are commonly used for Class A fires because they cool burning materials and prevent reignition. Foam extinguishers are effective against flammable liquid fires because they create a barrier that separates the fuel from oxygen.

Carbon dioxide extinguishers are widely used for electrical fires since they displace oxygen and leave no residue that could damage sensitive equipment. Dry chemical extinguishers are versatile and can be used on multiple fire classes, making them common in engine rooms and machinery spaces.

In addition to portable equipment, ships often include fixed firefighting installations such as CO₂ flooding systems, fire mains, hoses, and automatic detection systems. These systems help control fires in larger compartments where handheld extinguishers may not be sufficient.

The Role of Breathing Apparatus in Shipboard Firefighting

Fighting a fire onboard a vessel is not only about extinguishing flames. Smoke, toxic gases, and reduced visibility can quickly turn an enclosed space into a life-threatening environment.

To protect firefighters and rescue personnel, ships carry self-contained breathing apparatus (SCBA). These systems supply clean air through a compressed cylinder and face mask, allowing crew members to operate safely in smoke-filled spaces.

Using breathing apparatus requires training and practice. Firefighters must learn how to don the equipment quickly, monitor air supply, and move safely through confined areas while wearing heavy protective gear. STCW training includes exercises where participants conduct search-and-rescue operations and firefighting drills while wearing SCBA equipment to simulate real shipboard conditions.

These drills help crews build confidence and coordination during emergencies when visibility is low and time is limited.

Fire Prevention: The First Line of Defense

While firefighting skills are essential, prevention remains the most effective safety strategy. Many shipboard fires originate from avoidable hazards such as fuel leaks, faulty electrical wiring, or improper storage of flammable materials.

Regular inspections, good housekeeping, and strict adherence to safety procedures help reduce these risks. Crew members should always remain vigilant for potential ignition sources, including overheating equipment, open flames, or poorly maintained machinery.

Emergency preparedness also plays a crucial role. Knowing the location of fire detection systems, escape routes, and firefighting equipment allows crews to respond immediately when alarms sound.

Conclusion

Fire at sea presents unique challenges, requiring seafarers to respond quickly, work as a coordinated team, and use specialized equipment effectively. Understanding fire classifications, selecting the correct extinguishing method, and operating breathing apparatus are all critical skills for managing onboard emergencies.

Training programs like the STCW Fire Prevention and Fire Fighting (FPFF) course and STCW Basic Fire Fighting at FMTC Safety provide hands-on experience with firefighting equipment, emergency procedures, and rescue techniques. By developing these skills in a controlled training environment, maritime professionals gain the confidence and competence needed to protect their vessel, crew, and cargo when it matters most.