The evaluation of stability and buoyancy properties using this part of ISO 12217 will enable the boat to be assigned to a design category (A, B, C or D) appropriate to its design and maximum total load.
ISO 12217-1:2015 is principally applicable to boats propelled by human or mechanical power of 6 m up to 24 m hull length. However, it can also be applied to boats of under 6 m if they do not attain the desired design category specified in ISO 12217‑3 and they are decked and have quick-draining recesses which comply with ISO 11812.
In relation to habitable multihulls, ISO 12217-1:2015 includes assessment of susceptibility to inversion, definition of viable means of escape and requirements for inverted flotation.
ISO 12217-1:2015 excludes:
inflatable and rigid-inflatable boats covered by ISO 6185, except for references made in ISO 6185 to specific clauses of ISO 12217;
personal watercraft covered by ISO 13590 and other similar powered craft;
gondolas and pedalos;
surfboards, including powered surfboards;
hydrofoils and hovercraft when not operating in the displacement mode; and
ISO 12217-1:2015 does not include or evaluate the effects on stability of towing, fishing, dredging or lifting operations, which need to be separately considered if appropriate.