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ROSS 650 REGS

ROSS 650 CLASS RESTRICTIONS:  as at 30 January 2003


This amends issue 21 June 1999
Changes are listed in "Amendments" marked Schedule 'A'

1. Purpose
The Purpose of these design restrictions is to ensure uniformity so far as 
possible for racing purposes between Ross 650's.  A Ross 650 that does not conform 
with these restrictions and/ or which does not have a measurement certificate, shall 
be ineligible to participate in races organised or arranged by the Ross 650 Owners 
Association or to participate in races organised by other clubs or organisations for 
Ross 650's to race as a class.

2. Design

The design of each boat, including all appendages, shall conform to the designer's
plan but using offsets held by the Association at the time of construction in all 
respects and the only variations acceptable shall be such as permitted in these
restrictions, or as dispensed with by the Executive Committee and noted on the
measurement certificate. 

The licenced manufacturer (or designer) reserves the right to change these 
restrictions, rig or hull specifications on the grounds of product development and
improvement, commercial desirability or safety.

3. Insignia

The class insignia shown on the designer's plans shall be placed on both sides of 
the mainsail, on the upper part of it and shall be of a colour contrasting with that 
of the sail.

4. Manufacture
The hull, decks, centreboard and rudder of all Ross 650's shall be
manufactured by the manufacturer licenced by the designer or his authorised
agent.

5. Measurement Committee

The measurement committee as appointed from time to time by any general 
meeting of the Association, or any member of that committee acting as part 
of that Committee, shall have the authority to measure Ross 650's to ensure
that they comply with these class restrictions.  For that purpose, he or they 
may issue a measurement certificate, the form of which shall be decided upon 
from time to time by the measurement committee, to any Ross 650 that complies in 
all respects with these restrictions.  Any member of the Measurement 
Committee shall have the power at any time to check any measurement of 
any Ross 650 to ensure that the boat complies with these restrictions: whether 
or not that boat has a current Measurement Certificate: and shall have the 
power to cancel such Certificate if the boat is found to infringe any of these 
Class Restrictions.  The owner of any Ross 650 whose measurement certificate 
has been cancelled may request the measurement committee to state the 
reason for such cancellation and must have the boat re-instated by the
measurement committee before that boat is allowed to participate in any
further races as a Ross 650
.

6. Auxiliary

The Auxiliary must be an outboard motor complying with AYF or NZYF Trailer 
Yacht Safety Requirements and must be carried in an operable position on the
transom.  During races, sufficient fuel must be carried on board while racing 
to return the boat to shore or as required by other authorities.
 

7. Minimum weight

The minimum weight of any Ross 650 including motor, sails, mast, boom, 
spinnaker pole, all standing rigging, jib and main sheets, plus other such fixed 
items as are recorded on the measurement certificate and must be carried 
while racing shall be 660kg.  Boats under weight shall be brought up to weight 
by the fitting of equal amounts of lead being permanently fixed to the bottom 
of the boat in each of it's three corners. No boat may be brought up to weight 
by the overbuilding of furniture, framing or fittings.  This judgement shall be left
to the discretion of the Measurement Committee and/or persons authorised by
them to do so.  To avoid doubt, all tanks must be empty when the boat is weighed.

8. Weighing Procedure  

Boats  shall be weighed on a public weighbridge.  Measurements provided by
the weighbridge shall be final but subject to protest. Boats shall be checked by 
the Measurement committee to ensure the minimum requirements are met prior to
weighing.
Boats shall be placed on the weighbridge on a trailer.  The 
weight of the trailer alone as ascertained by that weighbridge to be deducted 
from the weight registered when the boat and trailer are on the weighbridge. 

9.Keel and Ballast.

Only a single drop keel as constructed by the manufacturer licenced by the 
designer is permitted with a maximum total weight of 240kg.  Ballast is optional 
and may be carried inside the boat permanently fixed to the floor with a
maximum weight of 273kgs with bulb fitted or 360kg without bulb.

10.Spars and rigging.

a)	Mast to be deck stepped and have a single set of spreaders.
b)	Standing rigging to consist of forestay, cap shrouds and lowers if
 	required.
c)	Adjustment is permissible on the forestay and side stays by rigging
	 screw only
.

11.Sails
a)	Maximum number of sails on board for racing: 7 as follows:
		1 Genoa (optional)
		1 Jib
		1 only Storm Jib (optional)
		1 only Mainsail (minimum number of 2 reefs)
		3 only spinnakers, up to two of which may be asymmetrical.
b)	Sail measurements shall be within the measurements of the
	specifications annexed hereto.

c)	Sails must be measured by a member of the Measurement Committee 
	and if the sail complies with these restrictions, it is to be marked by that
	member  verifying that the sail is in accordance with sail plan and 
	restrictions.  Sail measurements may be checked by the Measurement
	committee at any time.

d)	No headfoil system may be used, but a retractable or deck mounted
 	asymmetrical spinnaker pole may be used, which does not protrude more
	that 2 metres forward of the forestay deck fitting.

e)	Prior to the first race of a series nominated by the measurement 
	committee, it shall be the responsibility of each entrant to present such 
	sails as he requires for the series to the measurement committee for
	registration.

	Any boat shall be liable to disqualification if it used any sail during the 
	series which has not been registered with the Measurement committee in
	accordance with the clause.  Should any registered sail require repair or 
	alteration during the nominated series, it shall only be done with the prior
	consent of measurement committee and may not be used again for that 
	series unless the measurement committee has given its approval.

f)	Sails may be made of any material.

12. Disputes:  

In any dispute arising out of the managing or implementation or use
of these restrictions, the decision of the measurement committee shall be final 
unless the dispute shall arise during or as part of a formal race protest, when the
procedures for hearing that protest shall be followed.

13.	Matters not provided for shall be determined by, from time to time as
 	necessary, by the Association Committee but shall be confirmed or 
	rejected by the Association not later than the next following AGM but 
	in any event must apply in terms of clause 1.
14.	All New Zealand boats must be currently registered with the NZYF.

15	.It is the owner's responsibility to ensure that his boat and equipment 
	comply with these class restrictions at all times and that alterations or 
	repairs do not invalidate the measurement certificate.

16.ROSS 650 SAIL RESTRICTIONS:

a) Method of measurement 
Luff, Leech and Foot to be pulled hand taut and wrinkle free and measured 
to  intersection points.
					mm Tolerance
					Maximum
b)Mainsail: 
Luff Length			7450	+ 50
Leech length			8100	+ 50
Foot length			3370	+ 50
Roach  maximum			 600	+ 50
Headboard Width			 125	+ 50
First reef height (minimum)	 700
Second reef height (maximum)	2000	+ 50
	
Recommended full length top batten positioning:  (Measure down luff 1143 and
 measure down leech 1091)

Other battens to be approximately evenly spaced.

Bottom four batten pockets to be measured from leech to outer edge of stitching
 on the inner end of the pocket.  Maximum length 1000mm.


					mm Tolerance
					Maximum
c)Genoa
Luff length			6090	+ 50
Leech Length			5330	+ 50
Foot Length			3073	+ 50
Head Width			  50	+ 50


d)Jib:
Luff length			6090	+ 50
Leech Length			5400	+ 50
Foot Length			2500	+ 50
Head Width			  50	+ 50
May be fully or partially battened as desired.

e)#1 Spinnaker:
Luff Length			7300	+ 50
Leech Length			7300	+ 50
Foot Length			5500	+ 50
Maximum width			5500	+ 50

f)#2 Spinnaker:
Luff Length			7165	+ 50
Leech Length			7165	+ 50
Foot Length			3658	+ 50
Maximum width			3658	+ 50

g)Asymmetrical spinnakers
This is intentionally left unrestricted as a development area. 
The asymmetrical spinnaker pole may be made of any material.


17.SPARS

a) Mast (all measurements from bottom of tabernacle base)

							mm Tolerance
							Maximum
Boom fitting centre 
(recommended- not mandatory)			562	+ 50 
Spinnaker pole "D" ring				662	+ 50 
Spreaders					3407	+ 50 
Topping Lift maximum height			5852	+ 50
Forestay intersection with foreface mast	5852	+ 50
Side stay intersection with sideface mat	5797	+ 50 
Top of Spinnaker halyard sheave			6387	+ 50 

Mast section: 
Aitchison LA 8, Baverstock Bs10 or equivalent.
Mast may be partly or wholly carbon fibre.

b)Boom
LOA (cockpit traveller)(suggested)		3495
LOA (transom traveller)(suggested)		4025
Boom maximum depth including track 		 180
Minimum diameter (mm)	   			  76
Minimum wall thickness if alloy (mm)		 1.4
May be partly or wholly carbon fibre

c)Spinnaker Pole
Loa including fittings - may be tapered		3048
Minimum diameter 	   			  50
Minimum wall thickness if alloy (mm)	   	 1.4
May be partly or wholly carbon fibre

Note: Only two poles may be carried, one of which may be the retractable or 
deck mounted asymmetrical spinnaker pole.

18.RIGGING
(a)Standing
1 forestay		4mm 1 x 19 Stainless Steel wire
2 side stays		4mm 1 x 19 Stainless Steel wire
2 lower stays
(b)Running
1 main halyard
1 genoa halyard
Topping lift (which may double as a genoa halyard)

(c)Notes
1. Additional standing or running rigging may be used if Sail Development (see 
	below) is to be conducted or if an Asymmetrical Spinnaker is to be used.
2. The use of T balls to attach the forestay to the mast is discouraged on safety
 	grounds.
3. Through bolting of tabernacle through cabin roof is discouraged.
4. Topping Lift exit sheaves below the hounds are discouraged.
5. Rotating masts with integral supporting wires are permissible.
6. Boats shall have the capacity to drop the headsail to the deck while sailing, 
	leaving a forestay standing.
7. Wire luffed headsails (which double as a forestay) are discouraged on safety
	grounds.

				
19. SAIL DEVELOPMENT:
a)Notes
1. More than 1 spinnaker may be flown at any one time.
2. The spinnaker pole need not remain attached to the mast.
3. The boom may be used to fly more than 1 sail at any one time.
4. More than 1 headsail may be used at any one time.
5. Headsails may be flown from spinnaker poles or the deck mounted or 
	retractable assymmetrical spinnaker pole.

20.HULL DEVELOPMENT
a)Notes
1. Water ballast may not be employed unless it meets NZYF OR AYF requirements.
2. Sideways swinging keels, or keels which are moveable fore and aft  may only 
	be employed if they were at their most disadvantaged angle or position 
	when the  hull was subjected to the pull down test.
3. In any event, hulls will be equipped with a keel locking device which retains 
	the keel at least 2/3rd down in the case of inversion.  Unless permitted by 
	individual sailing instructions, keels shall remain at least 2/3rds down 
	while racing. 
4. Keel lifting mechanisms shall be fitted with a safety backup device (eg a second 
	cam cleat), which prevents the keel being accidentally dropped.
5. When the hull is at normal rest and without crew, filling any water ballast tanks 
	or other tanks and/or swinging the keel, will not result in the hull assuming 
	a list of more than 10 degrees in any combination.  
6. A single retractable forward canard of unrestricted dimensions and neutral 
	buoyancy may be employed when an Asymmetrical Spinnaker is flying.
7. Twin rudders, each of a surface area not less than that provided by the
 	manufacturer, may be used.
 


		
ATTACHMENT 'A'

AMENDMENTS

No.	Item	Detail

(A1)		Issue date changed from 21st June 1999
(A2)	2.	Movement of para 2 - Design from final para Item 20.
(A3)	10 b)	Was … 'and cap shrouds only' 
(A4)	10 c)	Was 'side stay'
(A5)	16	Method of Measurement followed 16 (a)
(A6)	16(a)	Negative tolerances removed.
(A7)	16(c)	Negative tolerances removed.
(A8)	16(c)	Duplicated method of measurement removed.
(A9)	16(d)	Negative tolerances removed.
(A10)	16(e)	Negative tolerances removed.
(A11)	16(f)	Negative tolerances removed
(A12)	16(f)	Personal note on light weight Sharpie kite deleted
(A13)	16(f)	Duplicated method of measurement removed.
(A14)	17(a)	Negative tolerances removed
(A15)	17(b)	Negative tolerances removed
(A16)	17(b)	Tolerances removed from Boom maximum depth and LOA.  LOA suggested only.
(A17)	17(c)	Tolerances removed from LOA
(A18)	18(a)	2 lower stays added
(A19)	18(c6,7)Items reversed

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