option 2 Notice of Race: be unfortunate to exclude DAYBOATS from racing; permitting them to race
x.0 IRC Rule 22.4.1 is modified by the addition of the following: with cruiser/racers then becomes the best available option. DAYBOATS are
x.1 Each boat shall declare her ‘Initial Crew Number’ prior to identifiable by the ‘D’ printed on their certificates adjacent to TCC.
the first race in which she competes. A clause to encompass some of the above might read:
x.2 Variation in a boat’s crew number shall be limited according Notice of Race:
to the following table, based upon her Initial Crew Number: x.0 Boats shall race in the following classes:
Initial Crew Number Limit of Variation Class Rule/Type Parameters
Up to 4 –1 +2 0 IRM/Racing LOA:Greater than 9.0m and less than 16.5m.
5 -12 –2 +2 IRC Series Date: 1995 and later.
13 - 20 –3 +2 RC Hull Factor: 10.4 and higher.
21 or more –4 +3 IRC DLR: 145 and lower.
There are of course many other options a Race Committee might choose. IRC TCC: Greater than 1.000 and less
Generally, except for safety reasons crew number minima are not rec- than 1.350.
ommended. However, Race Committees may wish to consider whether a 1 IRC TCC 1.100 to 1.199.
maximum variation in crew number should be imposed to prevent boats 2 IRC TCC 1.000 to 1.099.
leaving crew ashore on light weather days. 3 IRC TCC 0.999 and below.
2.5.2 crew classification 4 IRC/Cruisers IRC Hull Factor 7.5 or less.
IRC Rule 22.5 notes that IRC contains no restrictions on Crew Classifi- 5 IRC/Classic IRC Age (Series) Date of 1970 or earlier.
cation, in other words professionals and amateurs. The Rule continues 6 IRC/DAYBOATS IRC DAYBOAT.
to state that a Notice of Race may impose restrictions. If an Organising 7 SBR/Sports Boats All sports boats.
Authority wishes to impose any restrictions, it is strongly recommended x.1 A boat which meets all the requirements for Class 0 shall race in
that the ISAF Sailor Classification Code is used. In International events Class 0.
invoking Crew Classification, the use of this particular Code will be almost x.2 A boat which meets the requirements for both Classes 4 and 5
a prerequisite. shall race in class 5.
Noting the variety of restrictions that might be included it is not pos- x.3 An IRC DAYBOAT shall race in Class 6.
sible to frame a specific clause for a Notice of Race. The Rating Office are x.4 A boat which meets all the requirements for Class 7 shall race in
happy to give detail advice if requested. Class 7.
x.5 Classes may be altered, amalgamated or divided at the discretion
2.6 irc classes
of the Race Committee. Specifically, all boats of a particular design
Apart from the obvious splits by TCC, Race Committees might consid-
shall race in the same class at the direction of the Race Committee.
er splitting boats into classes by type. One of the problems IRC suffers
from is its acceptance of such a wide variety of boats ranging from elderly
2.7 endorsed certificates
heavy cruisers through ex-IOR types to the modern ‘racers’ and ‘sports
Race Committees should consider carefully before requiring all entrants
boats’. Each of these has its own performance profile resulting in race
to hold Endorsed certificates. Many less serious competitors will simply
results becoming increasingly dependent on conditions and course type.
find this a disincentive to participation at all, while the more serious are in
As a general principle, when fleets are large enough, splitting boats into
all likelihood already measured. In these circumstances, option 2 may be
classes defined by boat type and/or size or speed can be to the benefit of
all and is highly recommended. Splitting the ‘sports boats’ from the ‘cruis-
Notice of Race:
ers’ is to the benefit of all.
x.0 Boats in classes 0, 1, and 2 (3, 4, 5 etc) shall hold IRC
Alternatively, as has successfully been used at various regattas, the
physical parameters of boats can be used to define particular boats for the
OR: x.0 To obtain class and/or overall points and/or club championship
creation of a ‘racing’ class. The following outlines some of the options:
points, a competing boat shall (at the time of the race for which
points are being awarded) hold an IRC ENDORSED certificate.
Displacement Length ratio (DLr) Within the IRC fleet as a whole, av-
Boats not holding ENDORSED certificates shall not be included
erage DLR is around 200. Typical modern cruisers are generally in the
in any points calculations.
range 200 to 300 with anything over this being regarded as ‘heavy’. Mod-
The second option allows an ‘unendorsed’ boat to compete in an indi-
ern cruiser/racers fall largely between 150 and 200, with boats below 150
vidual race, but bars her from gathering points for an overall trophy.
being modern racers, racer/cruisers and sports boats. A simple split by
IRC Endorsement guidelines offer various options to Rule Authorities
DLR alone may however be unsatisfactory. A second, and possibly third,
for sources of data for Endorsed certificates including the option of the use
criterion may better define a class. A sports boat class might for instance
of ORC DSPM for the derivation of boat weight. If a country has elected not
be: “Boats with DLR less than 150, LOA less than 10m, and TCC more
to adopt this option, an organising authority for a race including boats from
than 0.950.”. In the specific case of sports boats however, a better alter-
overseas might then also include a requirement that all boats shall have
native might well be the RYA/RORC Sportsboat Rule (SBR). Organising
been weighed to establish boat weight for their Endorsed certificates.
Authorities considering the use of DLR limits for classes should note that
while DLR is a non dimensional parameter, it nevertheless tends to re-
2.8 non-spinnaker ratings
duce with increasing size of boats. Care should therefore be exercised in
IRC certificates for all boats also show a non-spinnaker TCC. Race Com-
selecting the limiting value for a class of wide variation in size with ideally,
mittees’ attention is drawn to Rule 8.4.2 which restricts the use of this TCC
limits being specific to classes rather than a fleet as a whole. Please con-
to races specifically defined as non-spinnaker. This restriction is deliber-
tact the Rating Office for further detail.
ate and is to prevent abuse of the non-spinnaker TCC. Note however that
IRC Rule 11.1 permits a Notice of Race to modify this class rule.
Hull factor Probably the best use of hull factor is in separating the cruis-
ers from the racers. Genuine cruisers have lower hull factors than racers.
2.9 short-Handed races
Typically, boats with hull factors of 7.5 and below will be cruisers. Again a
IRC Rule 8.2 now permits a boat to hold a second, concurrently valid, IRC
secondary factor may be needed to remove anomalies. In this context, an
certificate for use by a boat in short handed (ie maximum 2 crew) races.
associated minimum DLR can work to define a cruising class.
This permits an owner to configure his boat differently for short handed
racing without the need to continually amend and re-amend his certificate.
age Probably the best use of age is in identifying ‘classic’ boats. Qualify-
The short handed certificate is ONLY valid for short handed racing and
ing dates are of course totally at the discretion of race committees.
may NOT be used as an alternative certificate for normal racing. There is
DaYBoats Ideally, DAYBOATS should not race with cruiser/racers. Their no reason however why a boat should not enter a short handed race using
performance characteristics are often so different as to make good racing dif- her normal certificate. Race organisers should note that any boat hold-
ficult. In practice, except in areas with large fleets, it is inevitable that DAY- ing a short handed certificate will appear twice in IRC rating lists, with the
BOATS will race with cruiser/racers. In these latter circumstances, it would short handed TCC clearly identified.8
Notes to Race Orgs.indd 55 26/11/09 16:52:33
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