Soling One Meter Class Rules-01 October 2010
Note: Underlined blue text reflects revision approved 01 October 2009
Red text reflects revisions approved 2018 Rule changes
The definitions, dimensions, limits, and restrictions listed are intended to maintain the one-design concept of this class. The concept behind the Soling One Meter class is that a first-time skipper should
be able to build and sail a model yacht that has essentially no performance differences from a boat
built by an expert. All aspects related to performance are intended to be restricted to what can be achieved by building the kit straight from the manufacturer’s assembly manual. Aspects not affecting
performance are not as strictly controlled. These rules are intended to ensure that all boats are as close
as possible with regard to hull, deck, keel, rudder, sails, displacement and ballast. Any obvious attempt to negate or violate this concept shall require the boat be barred from competition until such time as
the violation is corrected.
The class specification is defined by these class rules, the control drawings, the manufacturer's assembly manual, and any applicable rules of the AMYA, in that order. If a feature which may enhance performance is not shown in the manufacturer's assembly manual and not specifically permitted by these class rules, then it is prohibited. All dimensions shown in the manufacturer's assembly manual are
to be adhered to unless specifically overridden by these class rules.
The class shall be called the Soling One Meter. Boats conforming to these class rules must be built from a kit, obtained from an approved manufacturer. The Class Secretary shall maintain a list of approved manufacturers of the kit.
2.1 Hull and Keel
The hull and keel shall be as supplied in the kit. The keel can be removable or permanently attached to the hull in the location shown on the control drawings.
2.1.1. Keel Thickness: The keel shall be that which is supplied in the kit. The assembled keel may
not be thinner than .410 inches measured 2.0 inches below the bottom of hull and 2.0 inches aft
of the leading edge.
2.1.2 Rudder Thickness: The mounting location is to be that shown on the control drawings.
Rudder thickness: the rudder may not be narrower than .25 inches measured at the fore and aft
of center of rudder, 1.5 inches aft of the leading edge and 1.5 inches below the bottom of the hull.
2.2 Deck, Hatch, and Lazarette
The deck shall be that supplied in the kit. Any method of deck attachment is permitted, provided that the deck inboard of the hull is unchanged. The deck flange, if any, may be removed. An alternate hatch cover may be fabricated, but must conform with that supplied by the kit. One opening (hole) may be in the deck area over the rudder shaft horn assembly. This opening, to be known as the lazarette, is optional. If installed, the lazarette opening in the deck is restricted in size to a maximum of
9 square inches (58 sq.cm). The shape of the lazarette and its covering material is uncontrolled.
2.2.1 Beam Measurement: The beam measurement at the widest point shall be a minimum of
8.875 inches (8-7/8”).
The rudder is to conform in size and shape with that that supplied in the kit. The mounting location is to be as shown on the control drawings.
2.4 Interior Construction
The construction, layout, materials, and equipment used inside the hull are unrestricted except where prohibited by any other rule. If an alternative method of reinforcing the deck at the mast step and mainsheet exit is provided, the hull and deck may be assembled without the forward and aft bulkheads
supplied in the kit.
3.0 Displacement and Ballast
The minimum ready-to-sail weight of the yacht shall be 10 pounds. The ready-to-sail weight shall include the radio receiver, batteries, steering servo, sail control unit, sails and rigging.
Ballast shall consist of lead shot permanently bonded in the keel. Molded, solid lead ballast shall be prohibited.
The mast and booms shall be made of solid wood or plywood. Hollow spars are prohibited, although a
slotted mast is permitted. If used, plywood must have all layers of uniform density. All replacement spars shall not exceed the dimensions of the originals contained in the kit, except that the jib boom may be up to 15-½ inches (394 mm) long. No weight shall be added to the jib club (jib boom) forward of the swivel.
The use of commercially available or home-made fairleads, turnbuckles, screw eyes, eye bolts, tangs, bowsies, goosenecks, boom vangs, mast jacks, mast cranes, outhauls and woven or braided wire for shrouds and stays shall be permitted. Fairleads (sheet exit guides) shall not extend higher than ½ inch (12.7 mm) from the deck. Larger screw eyes or though-deck eye bolts may replace screw eyes supplied with the kit.
5.1 Standing Rigging
The use of multiple diamond rigging shall be permitted. A permanent backstay is required. The ends of the spreaders shall not extend beyond the width of the hull at the mast. Spreaders shall be made of wood, aluminum or brass. Spreaders shall not be angled fore or aft of the mast. The side stays (shrouds or diamond stays) descending from the outer ends of the spreaders shall attach either to the mast (diamond stays) as shown in the manufacturer’s assembly manual or to the deck (shrouds) in the range shown by General Configuration Control Drawing Note 4. If diamond stays are used and located as shown in the manufacturer’s assembly manual, a second set of shrouds may be attached between the spreaders and the deck in the range shown by General Configuration Control Drawing Note 4.
5.2 Mast Crane - Backstay Bracket
The mast crane at the top of the mast may be longer than the one supplied in the kit and/or mounted
at an angle as shown on the control drawings to prevent the mainsail from interfering with the backstay. The mast crane may be constructed of wood, aluminum, or brass. The lower end of the backstay may
be attached at, but not beyond the transom.
5.3 Mainsail Height
The maximum height of the mainsail from the deck shall not exceed 51-¼ inches (1302 mm).
5.4 Jib Stay Attachment
The height from the deck to the jib stay attachment on the mast shall not exceed 45-¾ inches
(1162 mm) including the jack screw, if used.
5.5 Wind Indicators
The use of a wind indicator or wind vane on the top of the mast shall be permitted.
5.6 Deck Layout
Deck hardware shall be located in conformance with the control drawings. The method of attachment to the deck of any hardware is uncontrolled. Racks may be used on the deck in place of screw eyes. If fittings exist in alternate locations not permitted by the control drawings, the legal positions shall be clearly marked.
5.7 Mast Step
The mast must be stepped on-deck, but any mast step arrangement is permitted.
5.8 Running Rigging
Any outhauls, cunninghams and halyards shall each be attached to a single spar. The use of a separate jib halyard is permitted. Topping lifts are prohibited.
Sails shall be single-panel and shall be cut to match the control drawings.
6.1 Sail Material
Sails shall be made only from woven polyester fiber cloth, having a thickness of 0.004 to 0.007 inches
(0.1016 to 0.1778 mm).
6.2.1 Mainsail: No more than 3 battens positioned in such a way that the leach is divided into 4 equal parts. Maximum batten lengths: top 5 inches (127 mm), middle 6 inches (152 mm), bottom 4 inches (102 mm).
6.2.2 Jib sail: No more than 2 battens positioned in such a way that the leach is divided into 3 equal parts. Maximum batten lengths: top 4 inches (102 mm), bottom 2.5 inches (64 mm).
6.3 Sail Reinforcement
The sails may be reinforced by addition of woven cloth or tape material within 3 inches (76mm) of the head, tack, and clew corners, and within ¼ inch (6.4 mm) of the leech edge.
6.4 Sail Numbers and Class Logo
Sail numbers shall be a minimum of 3 inches (76 mm) in height and 3/8 inches (9.5 mm) in stroke width. They shall be placed as shown on the control drawings. The class logo shall be optional, but if present, must be as shown on the control drawings. Alternatively, sails may be marked according to the Racing Rules of Sailing (current edition).
7.0 Radio Any brand or type of radio equipment is permitted. Transmitters and receivers may
have more than two channels, provided no more than two channels are used, one channel for sail
sheet control only, and one channel for rudder control only. The use of a backstay tensioner, extra
jib trimmer or jib twitcher is prohibited. Use of radio transmissions from the boat except for the
establishment and maintenance of a radio control link, control unit positioning information, signal
strength and battery status information while racing is prohibited.
The use of any adhesive is permitted to bond any part provided with the kit, or permitted by these rules.
9.0 Control Drawings
The following control drawings are to be read as part of the class rules:
9.1 Sail Control Drawing, dated 14 February 2005.
9.2 General Configuration Control Drawing, dated 14 February 2005.
10.0 Manufacturer’s Assembly Manual
The manufacturer’s assembly manual is included with the kit, is dated either September 1987 or
July 1997, and is to be read as part of the class rules.
Sail Control Drawing and General Configuration Control Drawing are on separate pages under "Soling Class and Class Rules pull down"