Designed by the prolific New Zealand yacht designer Murray Ross in the late 1970s, the Ross 830 emerged as a cornerstone of the "New Zealand trailer yacht" revolution. It represents a bridge between the traditional cruising trailer sailer and the high-performance sports boats that would eventually dominate the Australasian racing scene. Characterized by its light displacement, generous beam, and a powerful fractional rig, the 830 was engineered to provide thrilling performance on the racecourse while maintaining enough volume for coastal weekend cruising. While many performance boats of this era sacrificed structural integrity for speed, the Ross 830 earned a reputation for being a robust platform capable of handling the challenging conditions of the Hauraki Gulf and beyond.
Ross 830 Information, Review, Specs

- Make
- Ross
- Model
- 830
- Builder
- Ross Marine
- Designer
- Murray Ross
- Number Built
- Production Year(s)
- 1981 - ??
Sailing Performance & Handling
The Ross 830 is defined by its skiff-like DNA, emphasizing speed through minimized wetted surface area and a high sail-area-to-displacement ratio. On the water, the boat is exceptionally responsive, offering the tactile feedback of a smaller dinghy but with the stability of a weighted lifting keel. The boat’s handling is noted for its ability to plane early under spinnaker, a trait detailed in historical overviews of Murray Ross designs found at Boating New Zealand, which highlights the designer's focus on "fast, fun, and affordable" sailing.
The 830 typically features a fractional rig with swept-back spreaders, allowing for significant mast bend to flatten the mainsail in heavy air. Its lifting keel is a critical performance component, allowing the boat to reduce drag downwind while providing a low center of gravity when fully extended for upwind work. Owners frequently report that the boat tracks well but requires active trim and weight management to keep it on its lines. In lighter airs, the 830 is notoriously difficult for heavier displacement cruisers to match, often "ghosting" past larger vessels with its minimal drag and efficient hull shape.
Interior Comfort & Variations
Unlike its more spartan racing successors, the Ross 830 offers a surprisingly functional interior that accommodates a family for short-term cruising. The layout is typically centered around a compact saloon with a small galley to port and a modest navigation station to starboard. The use of a lifting keel trunk dictates much of the central flow, but Murray Ross cleverly integrated this into the table or bulkhead arrangements in various builds. Sleeping arrangements generally include a double V-berth forward, which is somewhat tight due to the fine entry of the bow, and two substantial quarter berths that tuck under the cockpit seats.
Materially, the 830s were built using a variety of methods, including GRP (glass-reinforced plastic) and cedar strip planking for custom versions. This led to variations in interior finishing, with some amateur-finished boats appearing more utilitarian and professionally built units featuring teak or kauri veneers. The 830 shares its hull philosophy with its larger sibling, the Ross 930, which scaled the concept up to a 30-foot "pocket maxi" format, and the Ross 780, a more trailer-focused variant that sacrificed some of the 830’s interior volume for ease of road transport.
Known Issues & Buyer’s Checklist
Prospective buyers of a Ross 830 should focus their inspection on the structural elements that bear the brunt of its high-performance configuration.
- Keel Bolt and Case Integrity: The lifting keel mechanism is a high-stress area. Inspect the keel case for signs of stress cracking or water ingress at the join between the case and the hull. The lifting tackle and pins should be checked for wear and corrosion.
- Mast Step Compression: Given the high rig tension often used to tune the fractional mast, the area under the mast step can suffer from compression over time, particularly in older wooden-core decks.
- Chainplate Leakage: Like many boats of this vintage, the chainplates are prone to minor leaks which, if left unchecked, can cause soft spots in the deck core.
- Rudder Gudgeons: The 830’s high speeds put significant loads on the transom and rudder hardware. Ensure the gudgeons and pintles are secure and the transom shows no signs of delamination or "oil canning."
Community & Resources
The Ross 830 enjoys a dedicated following, particularly within New Zealand and Australia. While it does not always maintain a standalone class association, it is a staple of the New Zealand Trailer Yacht Association, where it competes in "A Division" fleets. Technical support and historical knowledge are frequently traded through the Ross 930 Class Association, as many components and tuning philosophies are shared between the two models.
The Verdict
The Ross 830 remains a benchmark for sailors who refuse to choose between the practicality of a trailerable boat and the exhilaration of a performance racer.
Pros:
- Exceptional Speed: Outstanding light-air performance and early planing capabilities.
- Versatility: Lifting keel allows for shallow-water exploration and easier trailering.
- Strong Pedigree: A Murray Ross design with a proven track record in offshore and coastal racing.
Cons:
- Interior Constraints: Headroom and forward berth space are limited compared to dedicated cruisers.
- Technical Demand: Requires an active, skilled crew to extract maximum performance and manage the rig.
- Maintenance Needs: Older hulls require diligent inspection of the keel lifting mechanism and deck core.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Lifting
- Rudder
- 1x —
- Ballast
- 1249 lbs (Lead)
- Displacement
- 2500 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 27.23 ft
- Waterline Length (LWL)
- 23.67 ft
- Beam
- 8.67 ft
- Draft
- 5 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- 31.5 ft
- E (Main Foot)
- 12.75 ft
- I (Foretriangle Height)
- 28.5 ft
- J (Foretriangle Base)
- 8.67 ft
- Forestay Length (est)
- 29.79 ft
- Sail Area
- 326 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 28.31
- Ballast / Displacement Ratio
- 49.96
- Displacement / Length Ratio (D/L) Ratio
- 84.16
- Comfort Ratio
- 8.79
- Capsize Screening Formula
- 2.56
- Hull Speed
- 6.52 kn