Carriage of Cargo

Question 1

What are different types of codes for the carriage of goods?

Answer 1

• Grain Code
• Solid Bulk Code
• International Gas Code
• International Nuclear Code
• Timber Code
• IMDG Code
• Cargo Stowage and Securing Code

These will all be used to write the ships SMS depending on what the ship carries

Question 2

What are the main hazards of solid bulk cargo?

Answer 2

• structural damage to ship due to improper distribution of cargo
• loss/ reduction of stability due to liquefaction of cargo
• Chemical reaction of cargo

Question 3

What is the Cargo Securing Manual?

What are its contents?

Answer 3

The Cargo Securing Manual is required on all types of ships engaged in the carriage of cargoes other than solid and liquid bulk cargoes. It gives guidelines so that a uniform approach is taken for the use and maintenance of cargo securing devices.

Includes

• Key definitions
• SWL of equipment

Rigging Log

• Type of securing device
• How many of each there are
• Location of securing devices
• Dates for re-certifying
• Maintenance schemes

Stowage and Securing

• Non-standardised/semi-standardised cargo
• Containers and other standardised cargo

Question 4

Describe the process for loading cargo from start to finish?

Answer 4

• Goods will arrive with a declaration of what is being shipped.
• The Mate will then create a bill of lading (evidence of the number, quantity and condition of) for the cargo to the shipper
• The Mate will then create a cargo loading plan and brief all involved in the operation (includes stowing, loading, unloading) as well as a toolbox talk

Question 5

What is the required initial GM for the different classes of ships?

Answer 5

• Timber, Grain and Beam fishing must have a 3.5GM

- All other ships shall have 1.5GM

Question 6

What is DWA?

How do you measure DWA?

Answer 6

• DWA = Dock Water Allowance
• It is how many mm your mean draught will change when you go from dock water to salt water and vice versa.
• In practical terms, this allows for the ship to loaded as efficiently as possible

Measuring DWA
- Take a series of dock water samples (for average) around the ship and measure their density using a hydrometer. Avoid taking samples where discharges are

• Check hydrometer for damage and place it in the sample, twisting it break the surface tension

DWA = FWA (1.025 - Dock Water Density) / 25

FWA = Summer Displacement / (TPC x 4)