Review of Oyster Mariner 35

Both the hull and the deck is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season.

The boat is equipped with 2 cabins, 4+2 berths, a galley, 454.0 liter fresh water capacity and toilet facility.

Rig of Oyster Mariner 35 anno 1991. 100% electric Oyster Mariner 35 sailing in Isles of Scilly

The Oyster Mariner 35 is equipped with a ketch rig. A ketch rig is generally considered easier to handle, because the sails are smaller, and because it can sail on most points to the wind with one sail completely taken down for repair or while reefing. The sail configuration of a ketch allows for better comfort and stability when sailing downwind or on a broad reach.

Fin keel

The Oyster Mariner 35 is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

The boat can enter most marinas as the draft is just about 1.60 - 1.70 meter (5.25 - 5.55 ft) dependent on the load. See immersion rate below.

Oyster Mariner 35 may be equipped with an inboard Perkins 4.108 M diesel engine at 48 hp (35 kW). Cruise speed is 6.0 knots.

The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.

The fuel tank has a capacity of 227.0 liters (59 US gallons, 49 imperial gallons).

What is Capsize Screening Formula (CSF)?

The capsize screening value for Oyster Mariner 35 is 1.91, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 7.2 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Oyster Mariner 35 is about 216 kg/cm, alternatively 1213 lbs/inch.
Meaning: if you load 216 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1213 lbs cargo on the boat it will sink 1 inch.

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Oyster Mariner 35 is 29.1.

What is L/B (Length Beam Ratio)?

The l/b ratio for Oyster Mariner 35 is 2.92.

What is Displacement Length Ratio?

The DL-ratio for Oyster Mariner 35 is 292 which categorizes this boat among 'medium weight cruisers'.

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 35m² (376 ft²).
Based on this, your favourite maritime shop can tell you the quantity you need.

Note: If you use a paint roller you will need more paint than if you use a paintbrush.

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.

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