Therefore, provided that the lowest/first tier of Steel Coils is the one that matters in terms of local strength, the Ship Operator usually checks the entire stack of Coils based on the Dimensions of the lowest/first tier Coil (Length and Diameter), using as Coil Weight the average of the stack. Attention should be drawn to the applicable Common Structural Rules that apply officially taking into consideration one type of Coil for the entire tanktop.

When loaded in a ship’s hold, steel coils are placed on dunnage.  Dunnage has two functions, to spread the steel’s load uniformly in relation to the ship’s structure and to provide frictional resistance. One inch thick softwood dunnage is often used with steel coils.  Dunnage can be a mixture of imperial and metric measurements, with 8 inch by 1 inch planks used with steel coils. 60mm by 80mm is used with steel plate and bars, and 6 inch by 4 inch is used with heavy steel.

Last but not least, compliance with stowage, securing and lashing principles should be, always, assured.

To conclude with, when carrying steel products by sea, it is essential to ensure that neither the steel nor the ship suffers damage. Its weight presents substantial challenges with overstresses, stowage and securing. The ship must be fit with the appropriate tools to check receivability of the cargo and the safety best practices of stowage, securing and lashing plans.

The Steel Coils Loading – Multiload Option covers any length and any size of coil and provides for each Cargo Hold:

· The max. number of tiers (1, 1.5, 2, 2.5, 3 etc. ) for 2, 3, 4 and 5-6 dunnages.
· The total number of coils, e.g. 1235 pieces
· The total weight of coils, e.g. 8027.5 MT

This Multiload feature is split in two main functions. (As per CSR Rules and the Loading Manual).

· The Maximum Allowable Steel Coils Loading.
· The Actual Steel Coils Loading.

Both are started from the (Ship Options) drop down menu of MULTILOAD weight input screen.

Given the Length, Diameter and Weight of any given Coil, for a particular Cargo Hold Multiload Option, determines the Maximum Number of Tiers (1, 1.5, 2, 2.5, 3, etc.) of Coils that can be loaded with 2, 3, 4 or 5-6 of Dunnage respectively. 

Giving the Length, Diameter and Weight of any given Coil, by pressing the Calculate button you get the following results for every case of 2, 3, or 5-6 Dunnages.

- Maximum Tiers in steps of 0.5 tier.
- Total Number of Coils per Cargo Hold.
- Total Weight in MT per Cargo Hold.
- Finally the Overall Double Bottom Strength for each Cargo Hold is also shown.

It is also important that some times we need to assess the Steel Coil Loading of our vessel
for only given Length, Diameter and Weight for other than the Maximum Allowable
number of tiers.

Giving the Length, Diameter ,Weight to be loaded of any given Coil and the Actual Tiers,
you get the following results by pressing the Calculate button:

- Total Number of Coils per Cargo Hold.
- Total Weight in MT per Cargo Hold.
- Overall Double Bottom Strength for each Cargo Hold.
- Finally the Local Tank Top Strength for each Cargo Hold and for every case of 2, 3, 4 or 5-6 Dunnages.

NOTE
For both options there is the possibility to “Store” and then “Recall” a desired pattern of
loading

In both Actual or Maximum Allowable Steel Coils Loading modules, the user can have detailed stowage arrangement results by pressing “Stowage”. Also, these results can be exported to an Excel file.

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