ISO standards download ISO 8666:2020 pdf download – Small craft — Principal data ISO 8666:2020 pdf download - Small craft — Principal data. 5.3 Athwartship 5.3.1 General Athwartship dimensions shall be measured as the distance between two vertical planes parallel to the centreplane of the craft when upright. 5.3.2 Maximum... 02-16 Download Now