PREAMBLE TO OZ GOOSE CLASS RULES
The Oz Goose Class is to be participatory and essentially home built from plywood and timber. The aim of the class rules is to keep the boats affordable. Home building is the route for controlling costs and providing a reasonably priced market for secondhand boats.
Professional builders may build Oz Geese, but the boats must not include features that are not common in average home builds using modest tools.
Fibreglass hulls and Sandwich construction hulls are not allowed.
These rules are only used for sanctioned regattas. They may be used for other events at the choice of the organisers. They are not relevant for casual sailing.
Boats that do not meet these Oz Goose rule requirements can race in the event at the discretion of the Measurer/s on the condition that the owner and crew accept that no results shall be recorded for the boat and crew and no trophies awarded to them.
These rules are subject to change.
This document is an basic document and will be modified over the years. It’s current purpose is to provide a framework for boat eligibility for the 2017 Philippines National Championships. It will be developed over time to govern the Oz Goose Class worldwide.
The various plans of the Oz Goose are the source document for eligibility.
The Measurer/s appointed to the event will visually examine the boats and may measure any component to see if it deviates from the plan. The Measurer may appoint deputies before or during a specific event.
If the boat deviates from the plan and the Measurer is of the opinion that the boat was built with the clear intention of following the plans, and there are no significant speed producing variations then the deviant goose can be allowed to race.
The official Measurer’s decision is final.
Hull to be built to one of the official plan versions. Small detail variations are allowed, such as splashboard/coamings and bottom stringers but no substantial measurement variations that may alter performance are acceptable. From time to time the designer may publish drawings that further define required measurements
Entire hull is to be built of plywood and timber.. It may be timber framed, glass taped or epoxy filleted.
Bottom of hull is to be minimum 6mm plywood. If 6mm plywood is not available then 5mm is allowed and is to be fibreglassed with standard E-glass woven cloth on the bottom and overlapping a maximum of 50mm 2″ up the sides of the hull or minimum of 25mm 1″. Weight of cloth can be 65gsm (2oz) minimum. Recommended maximum is 140gsm (4oz) or the boat will be too heavy for competition.
The remainder of the plywood can be a minimum of 4mm (5/32″) or 6mm (1/4″).
Buoyancy tanks fitted with inspection ports are to be effectively watertight. . Boat may be spot checked after each day’s racing by the Measurer.
Centreboard and rudderblade are to be timber construction. A fibreglass layer is recommended. Glass is to be standard E glass woven cloth 200gsm (6oz) or less. We have found 65gsm (2oz to be non durable for foils)
Maximum length for centreboard is 1100mm. Small variations are allowed for 2017.
Centreboard is fitted with simple stops to keep the top of the board higher than the top of the centrecase.
Maximum length for rudder blade is 900mm. Small variations are allowed for 2017.
Spars are to be Timber or plain, untapered Aluminium tube of 6000 series or lower – see article on this website for diameters and wall thickness.
Bamboo Yard and booms are allowed, masts cannot be bamboo. Please see the article on this website regarding choice of bamboo for the yard and boom.
Timber Masts are to follow the Plans. Fibreglass sheathing is allowed at chafe points.
Yards may not be hollow with the exception of a natural bamboo yard.
Booms may be solid timber. Boom may be built from timber and plywood not thinner than 3mm (1/8″) and be hollow. Fibreglass sheathing is allowed at one chafe point and ends.
Only one set of spars are to be used during the races for the regatta.
Sails are to be either the 89sq ft Balance Lug or the 82sq ft Triangular sail in the Oz Goose and Oz Racer plans
Sail cloth can be conventional inexpensive woven Dacron sail cloth, Polytarp or Tyvek.
Sails can be professionally or home made.
No battens are allowed in sails.
Only one sail can be used during the regatta.
No ball bearing blocks are to be used on the Oz Goose except for a ratchet block fitted to the mainsheet. Measurer may offer an exemption during 2017 events.
Downhauls and halyards may not be adjusted during a course race but may be adjusted between races, on the water or on the land. Downhauls may be adjusted during a distance race.
Downhauls are not to exceed 4:1 mechanical advantage
Outhauls may not be adjusted during a course race but may be adjusted between races on the water or on the land. They must be cleated or tied off on the boom. But may be adjusted during a distance race.
Outhauls are not to exceed 4:1 mechanical advantage.
Self bailing devices and pumps are prohibited.
Crew for racing is for one person or two persons sailing the Oz Goose. Overall Regatta results are for placings of boats regardless of the crew number in each boat.
An adult sailing with two smaller children will be considered to be a two person boat.
Two adults with one small child will be considered to be a two person boat.
All boats will race together. This may be altered by the Regatta committee for very large fleets but retain the principle that two person boats and one person boats will sail against each other.
When two person and one person Geese are racing against each other Race management will decide if there is a separate trophy for the top finishing two person Oz Geese using the overall point score.
Tow Rope – 8 metres minimum. 6mm (1/4″) diameter.
Bailer – Minimum 2 litres.
Life Jackets must be worn by each crewmember.
Centreboard and Rudder blades are to be attached to the boat with a light line or better.