Pipelines & subsea

Holding the line

Shore approach: a winch on the beach, bags offshore

Duration

2:10

Year

2026

The case

While a shore approach is being built, the pipe already lies on the seabed and a storm can arrive before it is secured. In this 400 m case, with nothing holding it the shallow end walks about 0.7 m with every wave. A 41 t beach winch and sandbag groups, each where it works best, hold the line to 1.6 m at most, against 21 m with no help after the same 27 waves.

Topics

• Shore approach
• Temporary stabilisation
• Installation

Basis. Generic synthetic case built for this piece. No client data. Not a design verification.