This part of ISO 9367 specifies the minimum requirements to allow efficient lashing and securing of semi-trailers, as defined in ISO 3833, on board roll-on/roll-off (Ro/Ro) ships, indicating in particular the lashing arrangements on the semi-trailer and the securing method to be used. It also gives, in annex A, for information to semi-trailer designers, the securing point arrangements generally used on Ro/Ro ships as laid down by International Maritime Organization (IMO) recommendations. In annex B, it gives for information some design indications to decrease damage during handling.