A fundamental principle of umpiring radio sailing is that umpires, observers and witnesses operate in the same area as the competitors controlling the boats.
Their decisions are based on information that is also available to competitors. In addition, umpiring depends on clear communication between umpires, observers and competitors: hails of contact, protests, room to tack at an obstruction and penalties must be heard by all parties and officials. Experiments to allow umpires to operate at a distance from the competitors led to penalties being given for infringements that the competitor could not reasonably be expected to have seen. This approach rapidly resulted in the breakdown in the mutual confidence and respect between umpires and competitors. Further technological experiments to improve communications are ongoing.
Umpires work as a team to cover the whole fleet, from the warning signal until the last boat finishes. Umpires work in partnership with observers, one observer for each umpire. Umpires may rely on information provided by an observer when making a decision.
To make a decision, umpires must follow boats before, during, and after any incident. To do this, each umpire follows a small, manageable number of boats. Umpires work to a pre-ordained plan to ensure that they concentrate on key points of the course. For example, all four umpires, with their observers, follow boats into and around the first windward mark.
An observer who hails “Contact” between boats that are not in the group being followed by their umpire partner must assume that the umpire has not seen the incident. The relevant umpire may request a report from the observer. The umpire will penalize a boat only if the observer provides convincing evidence that a rule has been broken.
An umpire may not have sufficient information on which to base a decision. In this case, the umpire will either remain silent or hail “No Decision” to inform competitors. Following an observer’s or umpire’s hail of “Contact” the incident will be reported to the race committee as an unresolved incident. When no decision is made following a valid hail of “Protest”, the protestor may proceed with the protest after the heat.
Umpires apply the principle of last point of certainty. They assume that the state of a boat, or her relationship with another boat, has not changed until they are certain that it has.
Umpires move around the control area to find the best vantage point for observing their boats. This position may not be where some competitors choose to stand to control their boats. In most cases, the best view of a group of boats can be obtained by being level with leading boats, looking back.
The success of umpiring is largely dependent on decisions of the race committee in laying the course. Repeated testing, using range finders, has demonstrated that reading sail numbers becomes problematic for all participants at more than 70 metres. At this distance, judgement is still possible for distances, angles, lay lines, converging courses and depth perception for the distance between boats or a boat and the mark. Race committees can ensure that the competition remains fair, and that umpires and observers can operate confidently by:
- laying marks at 70 metres or less from the control area;
- using courses that minimize congestion, especially at the first windward
- mark. The use of twin windward marks has become common. Some classes prefer rounding from the outside to pass back through the gate, and some the reverse. As the wind increases, move these marks further apart.
Umpiring minimizes time taken for protests, and umpire procedures are designed to reduce the chance of error. Umpires will, on occasion, make errors, for which they should promptly apologize. When there is contact and neither boat takes a penalty, the umpire decides who is at fault. Competitors will not always agree with the decision.
When giving a decision the umpire may add a few words of explanation. When requested, the umpire may give a more detailed response after the heat.
Competitors may assist umpires when there is a protest in these ways:
- Indicate where the incident took place.
- Indicate why they are protesting.
- Acknowledge rapidly if they intend to take a penalty.
- Take penalties promptly.
- Indicate if they believe that an infringing boat has gained an advantage despite taking a penalty.