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177data points analyzed by Sailpages.com to compile this OYSTER 435 buyer’s report
OYSTER 435

OYSTER 435

Oyster Marine Ltd.🇬🇧· Design: Holman & Pye
$75,571 avg$63,436 – $90,000 (7 listings)1983–199565 built
$2.9K – $7.8K est. annual maintenance
Bluewater CruisermonoCutterFin

Specifications

Hull

LOA43.42 ft
LWL36.83 ft
Beam13.71 ft
Draft6.33 ft
Displacement29,000 lb
Ballast10,999.7 lb
Hull speed1.34·√LWL8.1 kn

About the OYSTER 435

Versions include coachroof or deck saloon, aft or centre cockpit, ketch or sloop/cutter. The above specs are for the Coachroof Sloop. Optional keels: -Keel/CB: draft - 4.83ft - 9ft -Sheel: draft - 5.33ft Reported sail area above includes a 150% Genoa Also available with a Volvo MD30A62 hp diesel.

Performance

Comfort35.3
Capsize1.79
SA/Disp17.3
Disp/Len259
Bal/Disp37.9

ORC Performance Data(1 certificate)

Measured performance data from ORC (Offshore Racing Congress) certificates.

Polar Diagram

2468100°30°60°90°120°150°180°WIND
4kn6kn8kn10kn12kn14kn16kn20kn24knbeat VMGrun VMG

Boat speed (kn) vs. true wind angle. Source: ORC

Racing Ratings

GPH662.7 s/miOSN640.7

Triple Number

LowMedHighOffshore0.76881.03211.1779Inshore0.59270.82150.9651

ORC Measured

Displacement13810 kg (30451 lb)Wetted surface40.4 m² (435 ft²)Stability index-1.0

Sail Areas (ORC)

Main33.2 m² (357 ft²)Genoa59.1 m² (636 ft²)Asymmetric119.6 m² (1287 ft²)

Speed Table (kn)

TWA \ TWS468101214162024
52°3.54.85.76.46.97.27.47.57.5
60°3.85.16.06.77.27.47.67.77.8
75°4.05.36.26.97.37.67.88.08.1
90°3.85.26.37.17.57.88.08.28.4
110°3.85.36.47.37.78.08.38.78.9
120°3.75.16.37.17.68.08.38.89.2
135°3.24.65.76.67.37.78.18.69.2
150°2.63.94.95.86.67.27.68.18.6
Beat VMG2.23.13.84.34.74.95.15.25.2
Run VMG2.33.34.35.05.76.26.67.37.8

Estimated Value

Low Confidence
Based on 3 listings
Low
$50,101
Estimated Value
$52,235
High
$61,082
Inflation-adjusted to 2026 USD

Asking price by model year

8 listings · boat years 19831986 · median $75,000

$0$50k$100kmedian $75,00019851983 Oyster Oyster 435 · $84,000 · US1984 Oyster 435 · $90,000 · Outside United States, MY1986 Oyster Yachts 435 · $75,000 · United Kingdom1985 Oyster 435 · $49,950 · United Kingdom1985 Oyster 435 · $49,9501985 1985 Oyster 435 · $63,4361986 Oyster Yachts 435 · $88,836 · United Kingdom1985 Oyster 435 · $63,436 · United KingdomAsking price (USD)Boat model year

Each dot is one listing · hover for details · dashed red line marks the median · obvious data-entry outliers (top & bottom 2.5%) excluded.

Estimated Cost of Ownership

Based on 43.42ft LOA. Actual costs vary by condition, usage, and local rates.

$/ft/mo
Annual Maintenance
$2.9K – $7.8K
Hull, rigging, sails, engine service
Annual Docking
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Known Issues & Pre-Purchase Inspection

2 reported issues across 2 systems for the OYSTER 435, compiled from owner reports in sailing forums and owner-association material.

2 major
Keel1Plumbing1

Unlock the full inspection report

Thinking of buying a OYSTER 435? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.

  • All 2 specific issues — severity, symptoms & fixes
  • Model-specific pre-purchase inspection checklist
  • Downloadable PDF to take to your surveyor — yours to keep

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