**CLASS 1**
**EXPLOSIVES**

Stowage of Class 1 materials, including Gunpowder, Cartridges, Smoke Bombs, Ammunition, Dynamite, etc., should be away from crew quarters and the ship’s boat, just below the hatch covers.

*Maritime parcel services*

**CLASS 2**
**GASES**

**CLASS 2.1**
**FLAMMABLE GASES:**
Flammable gases, such as Acetylene, Ethane, Ethylene, Methane, Hydrogen, Lighter Gas, etc., should be stowed away from any heat source and crew quarters.

*Customs warehousing services*

**CLASS 2.2**
**TOXIC GASES:**
Toxic gases like Ammonia, Fluorine, Hydrocyanic Acid, Chlorite, Carbon Monoxide, etc., should be stowed away from heat sources, crew quarters, and food items.

*Toxic Gases*

**CLASS 2.3**
**NON-FLAMMABLE COMPRESSED GASES:**
Gases, such as Argon, Helium, Carbon Dioxide, Air Gas, Oxygen, filled in cylinders, should be stored on deck or below deck in well-ventilated cool areas. These gases expand when heated, posing a significant risk of explosion.

*Customs warehousing services*

**CLASS 3**
**FLAMMABLE LIQUIDS**

Flammable liquids are divided into three groups based on the flash point of the vaporized gas when heated.

**CLASS 3.1**
**PETROL:**
With a flashpoint below 18°C, it should always be stowed on deck.

**CLASS 3.2**
**DIESEL:**
With a flashpoint between 18°C and 23°C, it should be stowed on deck or below deck.

**CLASS 3.3**
**DIESEL:**
With a flashpoint between 23°C and 61°C, it should be stowed below deck.

*Non-customs warehousing services*

**CLASS 4**
**GASES**

**CLASS 4.1**
**FLAMMABLE SOLIDS:**
Flammable solids like Aluminum Powder, Celluloid, Naphthalene, Red Phosphorus, Films, Crude Oil, Dry Fibers, etc., should be stowed on deck or below deck and kept away from living quarters.

*Non-customs warehousing services*

**CLASS 4.2**
**SPONTANEOUSLY COMBUSTIBLE SOLIDS:**
Self-combustible solids such as Copra, Fish Meal, Dry Grass, Charcoal, etc., should be stored in well-ventilated areas, and gaps between storage should allow air circulation.

*Non-customs warehousing services*

**CLASS 4.3**
**DANGEROUS WHEN WET SOLIDS:**
Solids that exhibit flammable properties when in contact with water should be stored in well-ventilated dry areas, and contact with water must be avoided at all costs.

*Non-customs warehousing services*

**CLASS 5**
**OXIDIZING SUBSTANCES**

**CLASS 5.1**
**OXIDIZING AGENTS:**
These substances release oxygen, facilitating the combustion of flammable materials. Therefore, they should not be stowed near flammable materials.

*Non-customs warehousing services*

**CLASS 5.2**
**ORGANIC PEROXIDES:**
These substances can be flammable or explosive. They should be covered on deck, placed in cool and dry areas.

*Project Transportation*

**CLASS 6**
**TOXIC**

**CLASS 6.1**
**TOXIC SUBSTANCES:**
Toxic substances can enter the human body through ingestion and can be fatal. Therefore, they should be stowed away from food, drinks, living quarters, and moisture-releasing substances such as tobacco.

*Project Transportation*

**CLASS 6.2**
**INFECTIOUS SUBSTANCES:**
These substances can cause diseases as they contain microbes. They should be stowed away from food, drinks, and living quarters. In case of danger, the nearest health authority should be notified.

*Project Transportation*

**CLASS 7**
**RADIOACTIVE SUBSTANCES:**
These substances are transported in special containers that must be undamaged. Preferably, they should be stowed on deck, away from crew quarters, food, unprocessed films, medicines, and chemicals. They are classified into three groups based on their activity levels.