My Experiences of

FINDING, REBUILDINGAND UPGRADING

A“WORN-OUT”

QUARTER TONNER©Ian Travers

QUARTER TONNERS

Photo Credit- Bob Bateman

Presentation Format• “What is a Quarter Tonner”?• Project 1 ‘Bandit’• Project 2 ‘Per Elisa’

– How/where do you find a Good Quarter– Have the Boat – what next?– An ‘Average Quarter Tonner” approach to decision making.– Piecing it all together

• Rig• Sail Area• Keel

• Boat Building• Costs• Conclusions

immediate

Igor

WHAT IS A “QUARTER TONNER”?

• International Offshore Rule•24-27 feet long• 1300 kgs to 1700 kgs•Crew of 5•Trailor sailor-able•Budget to suit all tastes•Modified in recent years•Proper little boat

What makes a Good Quarter tonner!

• A relatively long boat- Average size is 7.7 m... Big is beautiful!Hull Speed =1.34 x Sqr Root of LWL Fast = 1.34 x Sqr Root of a “Long boat”

•Weight- An all up weight of 1400kgs approx.•Pedigree- it should be easier to make a fast boat faster!• Non-exotic construction. (HF)•Simple rig plan•Powerful sail plan•Stability•Doesn’t have to be but she should look nice!

Note: HF is Hull factor and is a significant component of the IRC rule. In broad strokes it is the rules way of penalising boats which are stripped out/ ‘non cruisey’ or made from an exotic material- Kevlar/ Carbon composite etc. Google Hull factor + IRC rule

A PROPER BOAT WITH PERSONALITY!

QUARTER TONNER REBUILD PROJECTHow big is too big!

Peter Morton’s ‘Bullit’ QTC winner June 2012

Bullit in Feb 2012Bullit in Feb 1980

THE BANDIT PROJECTModified Bolero 25 Production QTer

Photo Credit- Bob Bateman

OPTIMISATION PLAN• Removed some interior- primarily from the ends. (Weight)•Worked out upwind and downwind SA’s•Built in new chain-plates for new swept-back single spreader Rig.•Full aesthetics refit.•Bottom fairing•“Designed”, cast and fitted lead shoe. (70 kgs)•Found a second hand mast to fit the bill!•With the help of some friends found the right place to stick it in the boat!

Note: From memory, the mast went aft about 200mm. This is a must if you go for a non overlapping sail plan as it helps maintain balance.

•Fun Boat• Very competitive record.•Very economical to run.•Great resale potential

Along came a Tiger!

PER ELISA PROJECTCUSTOM QUARTER TONNER

CECCARELLI 1992

Where do you find a good Custom builtQuarter tonner?

ciao, spero che tu sia ancora tutti svegli!

Have the Boat- What next!

Engine removed. All Qters now gone to outboards.. No prop drag and permits an heavier keel. Significant reinforcing to bilge/floor reqd for heavier keel.

BLANK CANVAS READY TO GO!

The “AVERAGE” Quarter Tonner ApproachTo Aid Decision Making

Updated 17 Feb '12                        

QUARTER TON RATING COMPARISIONS                           

Paramater Espada Tiger Aguila AC Cote Alice II Per Elisa Cert Per Elisa T1 Actual Average Max Min STD Dev 

TCC 0.902 0.902 0.903 0.912 0.907 0.907 0.897 0.898 0.905 0.90 0.912 0.897 0.005

HF 8.6 8.9 8.9 9 9.1 8.8 8.7 8.7 8.8 8.83 9.1 8.6 0.169

RF 1.01 1.008 1.008 1.01 1.017 1.008 1.005 1.005 1.005 1.01 1.017 1.01 0.004

OH F 1.04 1.05   1.04         1.04     0.006

LH 7.73 7.75 7.7 7.7 7.75 7.7 7.63 7.63 7.62 7.69 7.75 7.63 0.047

LWP 5.73 5.66 5.7 5.73 5.6 5.88 5.64 5.64 5.56 5.68 6.2 5.6 0.087

B 2.8 2.7 2.69 2.8 2.78 2.7 2.61 2.61 2.61 2.70 2.8 2.61 0.077

W 1406 1524 1315 1398 1290 1407 1300 1300 1300 1360.00 1524 1300 81.363

IRC DISP 1885 2005   1875         1921.67     72.342

DLR 279 308 270 278 281 258 275 275 287 279.00 308 270 14.102

D 1.45 1.57 1.48 1.47 1.48 1.53 1.5 1.5 1.61 1.51 1.57 1.45 0.038

BO 0.48 0.48 0.45 0.51 0.47 0.37 0.44 0.44 0.48 0.46 0.51 0.37 0.042

X 0.1 0.07 0.07 0.09 0 0 0 0 0.06 0.04     0.043

h 0.04 0.03 0.03 0.04 0 0 0 0 0.02 0.02     0.018

SO 1.52 1.61 1.55 1.46 1.68 1.45 1.55 1.55 1.58 1.55 1.61 0.95 0.075

Y 0.22 0.32 0.34 0.23 0.38 0.33 0.36 0.36 0.28 0.31 0.38 0.23 0.060

P 9.75 9.97 9.74 10 9.89 9.99 9.75 9.75 9.74 9.84 10 9.74 0.120

E 3.41 3.9 3.43 3.56 3.5   3.41 3.41 3.45 3.51 3.9 3.41 0.178

J 2.71 2.43 2.85 2.93 2.85   2.8 2.8 2.75 2.77 2.93 2.43 0.163

FL 9.96 9.94 9.61 10.22 10.12 10.33 9.96 9.96 10.01 10.33 9.61 0.217

MUW 0.74 0.81 0.74 0.74 0.74 0.83 0.74 0.74 0.76 0.83 0.74 0.037

MTW 1.34 1.46 1.33 1.32 1.32 1.44 1.34 1.34 1.36 1.46 1.32 0.056

MHW 2.25 2.46 2.24 2.27 2.23 2.44 2.25 2.25 2.30 2.46 2.23 0.094

Llmax 9.4 9.61 9.2 9.75 9.6 9.7 9.4 9.4 9.51 9.7 9.2 0.187

LL 9.4 9.61 9.2 9.75 9.6 9.7 9.4 9.4 9.51 9.75 9.2 0.187

LP 3.02 2.79 3.14 3.2 3.08 2.86 3.02 3.02 3.02 3.2 2.79 0.136

HHW 1.53 1.4 1.6 1.6 1.55 1.48 1.53 1.53 1.53 1.6 1.4 0.065

HTW 0.85 0.74 0.87 0.9 0.81 0.79 0.85 0.85 0.83 0.9 0.74 0.050

HHB 0.09 1.01 0.09 0.09 0.09 0.09 0.09 0.09 0.21 1.01 0.09 0.325

HSAREA 14.49 13.6 14.74 15.84 14.92 14.23 14.49 14.49 14.60 15.84 13.6 0.636

SPA 43.31 43.45 43.94 45.49 44.5 43.36 44 44 44.01 45.49 43.31 0.723

STL 3.02 2.79 3.2 3.19 3.03 3.3 3.02 3.02 3.07 3.19 2.79 0.157

Updated 17 Feb '12                        

QUARTER TON RATING COMPARISIONS                           

Paramater Espada Tiger Aguila AC Cote Alice II Per Elisa Cert Per Elisa T1 Actual Average Max Min  STD Dev

TCC 0.902 0.902 0.903 0.912 0.907 0.907 0.897 0.898 0.905 0.90 0.912 0.897 0.005

HF 8.6 8.9 8.9 9 9.1 8.8 8.7 8.7 8.8 8.83 9.1 8.6 0.169

RF 1.01 1.008 1.008 1.01 1.017 1.008 1.005 1.005 1.005 1.01 1.017 1.01 0.004

OH F 1.04 1.05   1.04         1.04     0.006

LH 7.73 7.75 7.7 7.7 7.75 7.7 7.63 7.63 7.62 7.69 7.75 7.63 0.047

LWP 5.73 5.66 5.7 5.73 5.6 5.88 5.64 5.64 5.56 5.68 6.2 5.6 0.087

B 2.8 2.7 2.69 2.8 2.78 2.7 2.61 2.61 2.61 2.70 2.8 2.61 0.077

W 1406 1524 1315 1398 1290 1407 1300 1300 1300 1360.00 1524 1300 81.363

IRC DISP 1885 2005   1875         1921.67     72.342

DLR 279 308 270 278 281 258 275 275 287 279.00 308 270 14.102

D 1.45 1.57 1.48 1.47 1.48 1.53 1.5 1.5 1.61 1.51 1.57 1.45 0.038

BO 0.48 0.48 0.45 0.51 0.47 0.37 0.44 0.44 0.48 0.46 0.51 0.37 0.042

X 0.1 0.07 0.07 0.09 0 0 0 0 0.06 0.04     0.043

h 0.04 0.03 0.03 0.04 0 0 0 0 0.02 0.02     0.018

SO 1.52 1.61 1.55 1.46 1.68 1.45 1.55 1.55 1.58 1.55 1.61 0.95 0.075

Y 0.22 0.32 0.34 0.23 0.38 0.33 0.36 0.36 0.28 0.31 0.38 0.23 0.060

P 9.75 9.97 9.74 10 9.89 9.99 9.75 9.75 9.74 9.84 10 9.74 0.120

E 3.41 3.9 3.43 3.56 3.5   3.41 3.41 3.45 3.51 3.9 3.41 0.178

J 2.71 2.43 2.85 2.93 2.85   2.8 2.8 2.75 2.77 2.93 2.43 0.163

FL 9.96 9.94 9.61 10.22 10.12 10.33 9.96 9.96 10.01 10.33 9.61 0.217

MUW 0.74 0.81 0.74 0.74 0.74 0.83 0.74 0.74 0.76 0.83 0.74 0.037

MTW 1.34 1.46 1.33 1.32 1.32 1.44 1.34 1.34 1.36 1.46 1.32 0.056

MHW 2.25 2.46 2.24 2.27 2.23 2.44 2.25 2.25 2.30 2.46 2.23 0.094

Llmax 9.4 9.61 9.2 9.75 9.6 9.7 9.4 9.4 9.51 9.7 9.2 0.187

LL 9.4 9.61 9.2 9.75 9.6 9.7 9.4 9.4 9.51 9.75 9.2 0.187

LP 3.02 2.79 3.14 3.2 3.08 2.86 3.02 3.02 3.02 3.2 2.79 0.136

HHW 1.53 1.4 1.6 1.6 1.55 1.48 1.53 1.53 1.53 1.6 1.4 0.065

HTW 0.85 0.74 0.87 0.9 0.81 0.79 0.85 0.85 0.83 0.9 0.74 0.050

HHB 0.09 1.01 0.09 0.09 0.09 0.09 0.09 0.09 0.21 1.01 0.09 0.325

HSAREA 14.49 13.6 14.74 15.84 14.92 14.23 14.49 14.49 14.60 15.84 13.6 0.636

SPA 43.31 43.45 43.94 45.49 44.5 43.36 44 44 44.01 45.49 43.31 0.723

STL 3.02 2.79 3.2 3.19 3.03 3.3 3.02 3.02 3.07 3.19 2.79 0.157

LH = 7.7 m

E = 3.51mJ = 2.77m

D = 1.51mW = 1360 Kgs

P =

9.8m

STL = 3.07m

SPA = 44 Sq m

The “AVERAGE” Quarter Tonner

“Box”

E = 3.51m

J = 2.77m

Piecing it all togetherFrom the Top-Down

Using the “AVERAGE” Quarter Tonneras a guide to setting up the boat:

Average Quarter Tonner

LOCATING THE RIG

Many thanks Mark!

Paramater Espada Tiger Aguila AC Cote Alice II Per Elisa Cert Per Elisa T1 Actual Average Max Min  

J 2.71 2.43 2.85 2.93 2.85   2.8 2.8 2.75 2.77 2.93 2.43 0.163

RIG CONSIDERATIONS

•Single or double spreaders?•How many halyards?•Halyard locks or not?•Where to stick it into the boat!• Structural considerations for new mast position.•How big or small- The average QTer approach

P 9.75 9.97 9.74 10 9.89 9.99 9.75 9.75 9.74 9.84E 3.41 3.9 3.43 3.56 3.5   3.41 3.41 3.45 3.51J 2.71 2.43 2.85 2.93 2.85   2.8 2.8 2.75 2.77

FL 9.96 9.94 9.61 10.22 10.12 10.33 9.96 9.96 10.01

SAIL PLANStarting Point Espada

(QTC Winner 2011)

• Probably a little too big as Per Elisa:• Is smaller in volume terms

than Espada.• Has a more slippery hull form

• Design Ratios SA:D • Av SA/D Upwind = 28-30. (32)• AV SA/D Downwind = 50. (51)

• Easier to cut a bit off than........•Personal preferenceHate being underpowered!

Keel Considerations

Stability = power. Again look at the weight distribution slide, the overall weight of the boat did not change, just the distribution.Sail area, the upwind remained pretty much the same, but the kit went from 32M² to 45M².......which is a HUGE % sail area increase.

Weight StudyBefore & After

Item Original Proposed Remarks

Hull 430 430  

Internal Balast 160 0  

Keel 430 710  

Rudder 12 12  Engine 150 15  

Mast 32.5 32.5  

Boom 10.4 10.4  

Spini Pole 3.4 3.4  

Standing Rigging 9.5 9.5  

Running Rigging 10 10  

Batteries 20 20  

Stanchions etc 15 15  

Deck Gear 15 15  

Misc 10 20 Additional structure

  1307.8 1302.8  

ImplicationsQUARTER TON CUP 2012

OVERALL RESULTS

RankSail No Name Helm Hcap Race_1Race_2 Race_3 Race_4Race_5 Race_6 Race_7 Race_8 Race_9 Nt Pts

1 FRA 7891 Bullit Peter Morton 0.903 1 1 2 (11) 8 4 9 1 4 30

2 SWE 7744 Alice II Rickard Melander 0.906 3 4 3 2 6 (31/BFD) 12 2 2 34

3 GBR 8414R Aguila Sam Laidlaw 0.902 2 3 (10) 7 7 5 4 6 3 37

4 IRL 3087 Anchor Challenge Paul Gibbons 0.913 6 5 6 (21) 1 1 11 7 12.5 49.5

5 NZL 3311 Blackfun Rob Gray 0.912 10 2 1 5 15 (31/BFD) 3 8 10 54

6 GBR 50R Espada Louise Morton 0.903 4 14 7 10 5 (31/BFD) 8 5 1 54

7 IRL 999999 Tiger George & Neil Kenefick 0.907 9 8 4 9 2 (31/

BFD) 16 4 5 57

8 GRE 49 Atalanti IV George Andreadis 0.912 13 9 (15) 3 9 2.5 5 3 12.5 57

9 IRL 12296 Per Elisa Ian Travers & Eamon Rohan 0.905 5 12 13 1 14 6 1 10 (19) 62

10 ESP 3090 Cote Darren Marston & Olly Ophaus 0.906 7 6 8 (23) 3 10 7 12 11 64

11 IRL 1392 Illes Pitiuses Jason & Dominic Losty 0.903 16 10 5 (24.5) 21 2.5 13.5 13 7 88

Now The Fun Bit!

Transformation

Note: Quick adjustment forestay. We adjust 12 turns from fully on to fully off, depending on wind. No spanners reqd.

Note: Athwartships jib tracks. Reason being the LP on non-overlapping jibs does not vary so much so there is very little adjustment required fore/aft.The in/out adjustment allows for better sail shape control when the sheet is cracked. (No need for an outboard lead to control the leech twist) .

Note: Halyards run below decks.

Conclusions• Whatever the scale and scope of a rebuild project they are fun.•Sail as is or DIY, professional refit or a bit of both.•While daunting both these projects were very satisfying in terms of;

• A great sense of achievement• Develops ones boat building skills• Improves ones boat prep’ing skills• Understand IRC better• Generally meet great people.

• Very Competitive Class.•Excellent Class camaraderie.•Crew of 5•Trailer-sailor•Budget to suit all pockets.•A FUN easy & pretty boat to sail, crew, trail, store, and maintain!

Kinsale,Co CorkWednesday 26th- Saturday 29th June 2013

8-Races over 4-days in spectacular surroundings.

The perfect combination of competitive IRC Racing and a superb family holiday.For Mor

e information. Tel: +353 (0)21 4773433 . email info@kyc.ie www.sovereignscup.com

SEPARATE

QUARTER TON CLASS

CONFIRMED

Sailing Photo Credits- Bob Bateman