Ro-Ro Lashing - Trailer Holddown

Number of lashing points required for a ro-ro trailer from mass, acceleration and per-lashing WLL - CSS Code Annex 4.

Ro-RoLashingTrailer

Trailer masstTransverse accelgLashing WLLkN

Lateral force: 157kN

Lashings per side: 5each

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

n = \lceil 1.5 F / WLL \rceil

Symbol	Meaning	Unit
$WLL$	Working load limit of lashing	kN
$a_y/g$	Transverse accel	g

Source: IMO CSS Code Annex 4

In short

Number of lashing points required for a ro-ro trailer from mass, acceleration and per-lashing WLL - CSS Code Annex 4.

Learn the theory Cargo Securing Manual and CSS Code