Created : 22 june 2001
Last updated : 24 februari 2003
Classification : general publication
Copyright : restricted shareware
Status : Finished, valid from dec. 2002
Comments : These are the Formula 16 rules that were validated by the member vote in november 2002 with a 85 % majority
There is a distinction between the Formula 16 class and the Open Formula 16 class. The identifiers named under rule 2.1.1 are reserved for boats which are fully compliant with the Formula 16 class rules and the foundation boats. All grandfathered and dispensated boats at a particular time are grouped together with the compliant Formula 16 designs under the name "Open Formula 16 class". The Formula 16 HP class is therefor a more restricted subclass of the Open F16 HP class.
The word "crew", as used in these Formula 16 rules, refer to only the helmsman in
the single handed setup and both the helmsman and crew in the double handed setup.
The overall length of the hulls, outside rudder pintles, corresponds with the horizontal distance between the verticals passing through the extremity of the hulls, the boat being levelled on its waterline.
Elements fitted to the sterns that only function as hinges for the rudderblades or rudderstocks and don't effectively lengthen the waterline of the platform in any way.
The overall width of a platform corresponds with the horinzontal distance between the verticals passing through the extremities of the sides of the platform, with the boat being levelled on it's waterline and excluding protruding daggerboards, rudder blades or tiller bars. When wings are being used than the equivalant overall beam is determined by measuring the overall width including only one fully extended wing.
The width, taken over the platform and one fully extended wing, which results in the same amount of righting moment as a wingless platform.
The boat "ready to sail" shall be the assembled and dry platform, carrying the all the dry and clean equipement normally used for sailing and navigation. Excluded are the safety equipement and non permanently fixed wings.
The distance between de top of the main beam and the base of the mast section.
The distance between the base of the mast section and the highest point of the perpendicular projection on the mast of the hoisted mainsail
The part of the mast section with attached fittings that is farther away from the base of the mast section than the mainsail hoist height.
The distance, at right angles to the mast axis, measured around and back to the same point.
The weight that is measured at the mainsail hoist height of a mast being layed perfectly horinzontal with its base supported at the bottom edge of the mast section.
All lift producing elements that have as the pre-dominant purpose to resist sideways movement of the craft while sailing and that aren't canted at a greater angle than 6 degrees of the vertical when the boat is level on the waterline.
A centreboard is only different from a daggerboard in the sense that it is folded or rotated away rather than slid away when in danger of hitting submerged objects.
All lift producing elements that have as the pre-dominant purpose to control or alter the course travelled
All triangular sails not complying with the definition of a mainsail or a jib are gennakers, on the condition that the girth at mid-height is equal or greater than 75% of that of the foot. A gennaker is often also referred to as an asymmetric spinnaker or, less correctly, a spi.
The protruding device with the predominant purpose of placing the tack of the gennaker sail in front of the forestay.
All the stays connected to the mast, excluding the diamond wires.
All the lift producing elements with the predominant purpose of propelling the craft through the water.
In the measurement of sail area, the term "sail" shall be considered as defining the part of the sail outside the mast and including headboard. Cringles which are totally outside the edge of the sail or the bolt rope which is inside the mast shall not be included
Although the mast is called a mast and not a sail it is also considered a lift producing element contributing to propelling the boat through the water and part of it's area is therefor included in the maximal allowed mainsail area.
A measure for the slenderness of a given sail. This slenderness of a sail with a given area has a proven effect on the amount of produced sailforce.
This is a calculated percentage that is indicative of the sailforce creating effectiveness of a given sail and which is directly and solely dependent on the aspect ratio of the sail.
The distance measured alongside the mast from the highest point of a normally hoisted sail towards the lowest point reached when the downhaul is used.
The distance between the horizontals on the mast taken from the highest point of the jib towards the lowest point on either the luff or leech. It will be measured alongside the mast.
The distance at mid-height, between the mid point of the gennaker luff and the mid point of the gennaker leech.
A measure approximating the actual surface area of a gennaker sail by using an ISAF sanctioned formula.
The action of restoring the proper sailing attitude of the craft from any non sailing attitude. Non sailing attitudes is referring to states like capsizes, fully inverted capsizes (turtles) and pitchpoles; despite the fact that the craft may be blown along (sailing) in that attitude too.
The allowing of non Formula 16 compliant designs to race against fully compliant Formula 16 designs.