IRC YEARBOOK 2009
differs from the measurement shown on the certificate by more 22.2.6 All removable safety equipment.
than 1% of: P, E, STL, LOA, LWP, Beam, Draft, FL, LLmax, J, MHW, 22.2.7 Tools and spare parts.
MTW, MUW, (see Rule 15.0, Index of Abbreviations and Appendix 22.2.8 Loose gear.
1, Measurement Definitions); by more than 2% of SPA or HSA; by 22.2.9 Crew.
more than 5% of y, x h or HHB; or by 5% or 200 kg, whichever is the 22.3 When for practical reasons it is not possible to remove all items
less, in respect of Weights; or if specific detail is clearly in error. and equipment (e.g. fuel), it is acceptable to deduct the weight of
19.9 Following review and re-measurement, a new certificate may be these from the gross weight. The rating authority reserves the right I
R
issued which may be back-dated to the date that any erroneous to refuse such data when inadequate detail is supplied.
data was supplied. 22.4 The Rating Authority will calculate the empty weight of an un-
C
19.10 The owner of a boat requesting review of his own boat's rating weighed boat based on information contained on another rating
R
is liable for all measurement and rating costs. In all other cases, certificate, designer data or from any other source.
U
unless as a result of review a boat's certificate is invalidated 22.5 In the absence of other information, empty weight may be
L
under Rules 19.7 or 19.8, the person requesting the review shall calculated by deduction of the items detailed by Rule 22.2 from a
E
pay measurement and rating costs unless the Rating Authority boat's sailing displacement.
orders otherwise.
2
23 LENGTH ON WATERPLANE (LWP) AND DRAFT
0
20 RATING PROTESTS
23.1 The measurement points for various configurations of boats are
0
20.1 As permitted by the RRS, a rating protest may be submitted to a
9
shown on the diagrams for hull shapes and are defined in Appendix
protest committee. A protest committee may refer the matter to the 1. LWP is calculated by the subtraction of bow (BO) and stern (SO)
Rating Authority with the appropriate fee. overhangs from length overall (LOA). The dimension ‘y’ shall also
20.2 In the event of protest, the boat's rated data may be re-measured be supplied and dimensions ‘h’ and ‘x’ if appropriate. In the case of
by an authorised measurer. doubt, LOA and LWP shall be maximised. All measurements shall
20.3 A boat whose certificate is invalidated as a result of an error or be taken with the boat in the empty condition (see Rule 22.0).
omission by an IRC Rule Authority or by the IRC Rating Authority, 23.2 Overhang Factor (OF) is an assessment by the Rating Authority of
of which the boat could not reasonably have been aware, may be the bow and stern overhangs of the boat and their contribution to
penalised at the discretion of the protest committee. Additionally, sailing length.
a protest committee may order that races scored using the
invalidated certificate shall be re-scored using the corrected TCC. 24 KEEL, CENTREBOARD AND RUDDER
20.4 A boat whose certificate is invalidated in accordance with IRC Rule 24.1 Full details of a boat's keel, rudder and other appendages shall be
19.6 may be penalised at the discretion of a protest committee. supplied to the Rating Authority at the time of rating application.
Additionally, a protest committee may order that races under its
24.2 The Rating Authority reserves the right to add up to 50% of the span
jurisdiction scored using the invalidated certificate shall be re-
of a wing keel to a boat's draft.
scored using the corrected TCC.
24.3 Drop keels, centreboards, canards and other movable appendages
20.5 Subject to the RRS, when a boat is penalised by a protest
shall be declared. Unless fixed down while racing, drop keels will be
committee as a result of her certificate being invalidated under
rated as movable appendages.
Rules 19.7 or 19.8, her owner shall be liable for measurement and
24.4 Twin rudders are permitted.
rating costs unless the protest committee orders otherwise. In all
24.5 In the construction of hull appendages, no material with specific
other cases, the protestor shall be liable for measurement and
gravity greater than 11.3 is permitted.
rating costs.
24.6 Boats including material in their hull appendages with specific
20.6 When as a result of an action in a race or series, or the withdrawal of
gravity greater than 11.3, and with Age Date of 2005 or earlier, and
a certificate by the Rating Authority, a boat's rating is reviewed and
holding a valid IRC certificate on 31
st
December 2005 are exempt
its TCC increases by more than 0.010, the boat's Member National
from rule 24.5. Apart from routine maintenance, any such boat
Authority shall investigate the circumstances and report its findings
changing the quantity of material of specific gravity greater than
to the Rating Authority.
11.3 shall comply with Rule 24.5 and will not subsequently be
eligible for exemption from compliance with IRC Rule 24.5.
21 SPARE
25 ENGINE AND PROPELLER
22 EMPTY WEIGHT
25.1 Boats will be rated with either:
22.1 Empty Weight is the weight of the boat in the following dry
25.1.1 No engine.
condition:
25.1.2 Outboard engine (i.e. an engine where the propeller may be
22.1.1 Fully rigged with all spars (including spinnaker pole(s)
removed from the water while racing).
and jockey pole (if any)), standing rigging, backstay,
25.1.3 Inboard engine, including strut drive and stern-drive
runners and checkstays, halyards, main and mizzen
configurations. Propeller type shall be declared at the time
sheets, and vang(s).
of rating application.
22.1.2 Main engine installed, or outboard engine aboard in stowed
25.2 Inboard engines shall be capable of producing a minimum speed of
position.
1.8*LWP^0.5 knots. Outboard engines shall be securely fastened
22.1.3 Batteries and fitted berth cushions on board in their normal
in their normal stowage positions for racing.
positions if carried while racing. These items will be noted
on the boat’s certificate.
26 RIG AND SAILS
22.1.4 All permanent fixtures and fittings and items of
26.1 General
accommodation whether detachable or not, including
26.1.1 Single and twin masted rigs only may be rated under IRC.
washboards, bunk and floorboards and saloon table
26.1.2 'Cat' rig is defined as a rig where no sails are set forward of
(if fitted for racing) on board in their normal positions.
the mast(s) when sailing to windward.
22.1.5 Standard fit out if rated to class standard data.
26.1.3 'Gaff' rig includes square, spritsail and other similar rig
22.2 The following items shall not be on board for weighing:
configurations.
22.2.1 Sails, headsail and spinnaker sheets and guys, spare
26.1.4 Mizzen staysails shall be declared.
standing and running rigging.
26.1.5 There is no limitation on the number or type of sails on board
22.2.2 Fuel, water and the contents of any other tanks. Gas bottles
while racing under IRC except:
shall be removed.
(a) the limitation on spinnaker numbers (see Rule 26.6.2).
22.2.3 Food, cooking and catering utensils.
(b) the limitation on sails containing exotic materials
22.2.4 Anchors, chains, warps, mooring lines and fenders.
(see Rule 26.4).
22.2.5 Clothing, bedding and personal effects.
(c) the limitation on headsail numbers for boats rated with
8
39
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