Bull 900
HART MARINE · Greg Young · 1995
Updated
The Bull 900 is a 9.51 m semi-displacement racing yacht designed by Greg Young and built by HART MARINE, first launched in 1995. It races in Class C.
Length
9.51 m
31′ 2″
Beam
3.29 m
Draft
2.17 m
Displacement
2.5 t
Sail area
58 m²
On the podium
Where a Bull 900 finishes when she goes racing.
On the podium
67%
of 24 starts by 1 boat
Wins
38%
Read from 24 starts by 1 boat between 2022 and 2026, counting races with six boats or more.
Recent regattas
The latest events where a Bull 900 was on the start line, named as the organisers publish them.
Rolex Swan Cup2026
Pittwater Regatta - NSW ORC Championship2025- Rolex Swan Cup2024
- Pittwater Regatta - NSW ORC Championship2024
- Rolex Swan Cup2022
Raced one we are missing?
Report a regattaRound the buoys, or offshore
A short windward-leeward and a night at sea ask different things of a boat. Here is how this one does in each.
Round the buoys
36%
of these races end on the podium
Offshore & coastal
92%
of these races end on the podium
Better the longer it gets. Boats that settle into a groove and hold it gain ground once the course stops turning.
Who she races against
The designs a Bull 900 actually lines up with, most often first. The bar shows how those meetings ended.
Also met, too few times for a figure:
Corby 36 (6 meetings), Sun Fast 3300 (Andrieu) (6 meetings), Ker 33 (6 meetings), Bh 36 (6 meetings)
Some of the boats it races against
How the Bull 900 has fared against each of them, boat against boat on corrected time. Ordered by how often the two meet, not by who wins.
Speed at every angle
The shape of this design's speed, drawn from the measured fleet. Pick a wind and watch it stretch.
Upwind VMG
5.47
35°
Beam reach
9.00
90°
Broad reach
11.52
135°
Downwind VMG
8.91
170°
Speed in knots at 20 knots of true wind. Green marks the angles that pay: the closest useful beat and the deepest run worth sailing.
Where it wins and where it pays
Every boat is judged against its own measurements — length, weight, sail area. The quicker those say it should be, the more it has to deliver just to break even. Going fast is not enough: it has to go faster than its own numbers promised.
This is a boat that wants breeze. Give it a fresh day and long legs and it delivers more than it promised; in a drifter it is working uphill.
Where it gains
Its best ground is off the wind when it blows, where it goes better than its measurements say it should, and by a margin worth having. It holds that advantage on the run as well, so the gain is not down to one leg of the course.
Where it pays
There is no condition where it falls away badly, which is worth something over a season of mixed weather.
Above the line it delivers more than promised and gains on the fleet. Below, it falls short. Move the wind: plenty of boats sit on one side in the light and the other when it blows.
Full width is 1.8 kn either way.
At 10 knots this design makes back more than its rating asks on the upwind.
How fast is a Bull 900
Boat speed in knots, by true wind angle and wind strength.
| Angle | 6 kn | 10 kn | 14 kn | 20 kn |
|---|---|---|---|---|
| Beat VMG | 3.84 | 5.06 | 5.36 | 5.47 |
| 52° | 5.77 | 6.98 | 7.29 | 7.49 |
| 60° | 6.03 | 7.14 | 7.53 | 7.78 |
| 75° | 6.19 | 7.29 | 7.89 | 8.34 |
| 90° | 6.11 | 7.33 | 8.09 | 9.00 |
| 110° | 6.19 | 7.64 | 8.55 | 9.62 |
| 120° | 6.04 | 7.58 | 8.83 | 10.50 |
| 135° | 5.44 | 7.24 | 8.55 | 11.52 |
| 150° | 4.60 | 6.70 | 7.87 | 10.29 |
| Run VMG | 3.99 | 5.85 | 7.02 | 8.91 |
How they are set up
The range each sail spans across the fleet.
Nearly all carry a folding propeller. Crew weight is declared around 600 kg.
Rigging
Bull 900 rig and sail dimensions
A Bull 900 carries 12.87 m of mainsail hoist on a 4.39 m boom, a forestay 11.97 m above the deck. Typical figures across the 2 boats measured under the current VPP, with the range each one spans.
Rig
Sails