Old (pre ISAF) rules

Current (ISAF) rules

Comment (blank = no significant change in original wording)

Number

Title

Number

Title

1.

Object

-

Omitted, not required in rules

2.

One design principle

A.1.2

Minor change (“such” deleted)

3.

Definition of builder

D.2.1

Hull and Deck

D.2

Hull and Deck

4 (a)

Tooling supplied by designer

D.2.2

4 (b)

Minimum weight

D.3.1

4 (c)

Review of min. weight

D.3.2

4(d)

Excess hull weight OK for crew ballast

D.3.3

Centreboard & Rudder

E

Hull Appendages

ISAF term is “daggerboard” (see definition E.1.5 in ERS)

5.

C/B & rudder must be supplied by builder.  May be refinished and repaired

E.1.2
C.2.3(c)
C.2.5

First sentence is E.2.1.  Second sentence is included C.2.3(c) (wording is changed, also covers hull)

6.

C/B stop required

E.2.1

7.

Rope handle allowed

C.4.1

8.

C/B safety line allowed

padding allowed

C.4.2

C.4.3

Original rule divided into 2 parts, no other change in wording

9.

Rudder shall have a downhaul.

Uphaul may be added

E.3.1

C.2.3(b)

10.

Tiller not restricted, must be removable

C.2.3(a)

11 (part)

Tiller shall have a cleat for downhaul.

E.3.2

Rule is split to separate “shall” part from “may”part

11 (part)

If uphaul added, cleat is required.

C.2.3(b)

11 (part)

May use shockcord in downhaul

C.2.3(b)

Fittings and Equipment

12.

First para, permitted changes due to “circumstances of supply”

C.2.1(a)

12.

Second para, No added functions

C.2.1(b)

Minor changes in wording, “boat” replaces “hull, deck, spars, sails or equipment”

12(a)

Wind indicators

C.2.2(a)

12(b)

Additional tufts

C.2.2(b)

12(c)

Replacing cleats

C.2.4(b)

12(d)

Replacing blocks

C.2.4(d)

12(e)

Boom vang cleats

C.2.4(c)

12(e) is split because first part refers to a replacement, second part to an option

12(e)

Wedges under cleats

C.2.2(c)

12(f)

Rigging mainsheet

C.2.3(d)

Tolerance for strop is included, ref. to “as supplied by the builder” is deleted.

12(g)

Traveller control line

C.2.3(e)

12(h)

Downhaul control line

C.2.3(f)

12(i)

Replacing inspec. ports

C.2.4(f)

12(j)

Additional inspec. ports

C.2.2(e)

12(k)

Storage in cockpit

C.2.2(f)

12(l)

Two compasses allowed

C.2.2(g)

12(m)

Safety equip. allowed

C.2.2(h)

12(n)

Jib tack downhaul cleat

C.2.2(i)

12(o)

Shackles on clew board

C.2.2(j)

12(p)

Shroud pull backs

C.2.2(k)

12(q)

Outhaul fairlead on boom

C.2.2(l)

12(r)

Topmast stiffeners required

F.1.2

Stiffeners are required, so this rule is included in  section F

12(s)

Taping rotation handle

C.2.2(m)

12(t)

Centreboard restrictor

C.2.2(n)

ERS defines board as daggerboard

12(u)

Packing under jib fairleads

C.2.2(d)

Order changed, so this rule follows rule allowing wedges.

12(v)

Notched rotation stop

C.2.3(g)

Sheets, Lines & Rigging

13

Sheets may be changed

F.4.1

14

Wire and line

F.4.2

14(a)

Forestay length

F.1.3

14(b)

Hounds to top of jib

F.1.4

Jib measurement point is “aft head point”, as specified in ERS.

14(c)

Wire spec, rolled swages permitted

F.4.3

Watertight Integrity

C.3

Buoyancy

15

Reasonable integrity required

C.3.1

15(a)

Watertight barrier behind compass

C.3.2

15(b)

Seal recessed compass

C.3.3

Sails

G.

Sails

16

Accuracy of sail cutting

G.2.1

Revised wording.  Ref. to “accuracy of a Gerber cutting system 90” is deleted

17

first para, no recutting allowed

G.2.2

17

second para, leech take up allowed

G.2.3