Pipes shall be lashed for every 2.4 m wide stow. (see fig 3.1)
The number of chains required varies with the length and weight of the pipes. For a rule of thumb and guidelines on chains per ton, see table in "Securing guideline"
For pipes of 6.1m or less, three vertical lashings shall be stretched for every 2.4 m wide stow. (see fig 3.2)
For pipes of 6.1 to 12.2 m or less, a minimum of five vertical lashings shall be placed for every 2.4 m wide stow. (see fig 3.3)
Chains should be fastened in overhead deck or bulkhead and tightened as much as possible. Chains shall be as vertical as possible to prevent cargo from shifting underneath the lashings during the vessel's movement. Lashing shall not be attached to the vessel's hoistable car decks.