Annex
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1624 - Amendments to the Code of Safe Practice for Ships Carrying Timber Deck Cargoes, 2011 (2011 TDC CODE) – (7 December 2020) - Annex

Annex

 This document has been consolidated into 2011 TDC Code

Part B - Design of cargo securing arrangements

Chapter 6 - Alternative design principles

6.2 Accelerations and forces acting on the cargo

1 Paragraph 6.2.1 is replaced by the following:

"The cargo securing arrangement should be designed for accelerations, as well as forces by wind and sea, calculated in accordance with annex 13 of the CSS Code."

2 Paragraphs 6.2.2 up to and including 6.2.5 are deleted.

Annex B - Samples of stowage and securing arrangements

B.5 Example calculation – Uprights for round wood

Example B.5.3 – Uprights for round wood on a 6,000 DWT ship on the Baltic Sea

3 The text under figure B.7 is replaced by the following:

"The ship is trading in the Baltic Sea with a weather forecast predicting a significant wave height up to 5.5 meters. Thus, the reduction factor for operation in restricted waters is taken as:

  • fR = 1 – (Hs – 13)2 / 240 = 1 – (5.5 – 13)2 / 240 = 0.76"

B.6 Example calculation – Frictional securing of transversely stowed round wood

Example B.6.1 – Frictional securing of round wood on a 6,000 DWT ship

4 The last paragraph under figure B.8 is replaced by the following:

"The maximum allowed significant wave height HS with this stowage arrangement is calculated as 2.4 m according to the following:

  • at = at basic ⋅ fR1 ⋅ fR2 ⋅ fR

  • fR = 1 – (HS – 13)2 / 240

  • HS = 13 - = 2.4 m"

Parent topic: MSC.1/Circular.1624 - Amendments to the Code of Safe Practice for Ships Carrying Timber Deck Cargoes, 2011 (2011 TDC CODE) – (7 December 2020)
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