OSTRO
Class ADisplacementCruiser/Racer

OSTRO — ITA-STR25

Model: Dufour 530

DufourUmberto Felci

Updated

OSTRO (ITA-STR25) is a Dufour 530 designed by Umberto Felci and built by Dufour. She has been racing since 2026. She sails with a smaller sail plan than most Dufour 530s. Against a typical Dufour 530 she is quicker on a beam reach, and slower upwind in light air and downwind.

OSTRO ITA-STR25 - Umberto Felci - Dufour

Racing record

Races with at least six boats

1

Race start

0

Wins

0%

Podiums

1

Race Edge

512.6s/mile

Rating 2026

Race Edge by wind strength: how much she delivers beyond her rating, compared with the other boats in her class.

Under 10 kn2
10–16 kn20
Over 16 kn67
Compare with another boat

Length

15.23 m

50′ 0″

Beam

4.91 m

Draft

2.06 m

Displacement

17.6 t

Sail area

126 m²

On the podium

Where OSTRO finishes when she goes racing.

0

Wins

0

Seconds

0

Thirds

1

Starts

Not enough races yet for a percentage — these are the counts so far. We keep collecting results, so this will fill in.

Regattas

Every regatta we found with OSTRO on the start line, named as the organisers publish them.

  • ItalyRegata Brindisi-Corfù202650

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Who she races against

The boats OSTRO meets most often on the start line. The bar shows how those meetings ended, on corrected time.

Other competitors (24)

Met too few times for a figure.

NEAPOLIS (Oceanis 393, 1 meeting), JASMINE (Bavaria Cruiser 39, 1 meeting), CIOTTOLA (Nova 37, 1 meeting), TERZA BERENICE (Bavaria 40, 1 meeting), SEATERNITY (Sunbeam 46.1, 1 meeting), BOLLICINE (Sun Odyssey 42 (Lombard), 1 meeting), FALCON II (Baltic 43, 1 meeting), MATTONE V (Marchi 39, 1 meeting), MANIA (Show 34, 1 meeting), COBALT (Sun Odyssey 44, 1 meeting), BLU FANTA'SIA (First 40.7, 1 meeting), FLYING TEAPOT II (Grand Soleil 46 (Jézéquel), 1 meeting), BLUE BONE (Sun Odyssey 43, 1 meeting), CLEOPATRA (First 40.7, 1 meeting), TIP MOSS II (Sun Odyssey 51, 1 meeting), A&L DREAM (Hanse 430, 1 meeting), LEA (Elan 37, 1 meeting), ARIEL (Dehler 34 (Judel/Vrolijk), 1 meeting), HYDRA (Comet 36, 1 meeting), SOUND OF SILENCE (Bonin 358, 1 meeting), DUFFY (Dufour 34, 1 meeting), EXCELLENT (Bavaria Match 38, 1 meeting), ANGIOLINA (Sun Odyssey 44 (Briand), 1 meeting), BEATRIZ (First 40.7, 1 meeting)

How OSTRO compares with a typical Dufour 530

Her main 2026 measurements against the middle of the fleet: one boat per sail number, the latest full-crew configuration with spinnaker, Dufour 530s measured since 2025.

Above the line she is quicker than a typical Dufour 530; below, slower. Move the wind: plenty of boats sit on one side in the light and the other when it blows.

True wind
Upwind-0.14 kn
Beam reach+0.08 kn
Broad reach-0.23 kn
Downwind-0.18 kn

Full width is 0.4 kn either way.

At 10 knots she gives away time to a typical Dufour 530 on the broad reach.

Speed at every angle

OSTRO in blue, a typical Dufour 530 dashed.

30°60°90°120°150°WIND

OSTRO in blue, a typical Dufour 530 dashed; green marks the closest useful beat and the deepest run worth sailing.

More about the Dufour 530

Speed at every angle, Race Edge, the race record of the whole fleet and how the boats are set up.

Explore the design

Something wrong in OSTRO's data? A regatta, a result, her design or her sail number.

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