Review of Marex 375

Basic specs.

The Marex 375 is a large motorboat designed by the maritime architect Marex. The Marex 375 is built by the Lithuanian yard Marex Boats, UAB.

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Hull

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.

Interior

The interior is like most other boats made of teak. Teak has the advantage of being naturally very oily and therefore water-repellent, which is suitable on boats.
The boat is equipped with 2 cabins, 2+2+2 berths, a galley, 340.0 liter fresh water capacity, toilet facility and 150.0 liter waste water capacity.

Engine

The Marex 375 has been equipped with different engine alternatives.

Alternative 1:

The boat may be equipped with an inboard Volvo Penta D6-480 diesel engine at 480 hp (357 kW).

Alternative 2:

Marex 375 may be equipped with an inboard Volvo Penta D6-440 Dpi diesel engine at 440 hp (327 kW).

The transmission is a Z-drive aka sterndrive.

Alternative 3:

The boat may be equipped with dual inboard Volvo Penta D4-320 Dpi diesel engines at 640 hp (476 kW).

The transmission is a Z-drive aka sterndrive.

Alternative 4:

The boat may be equipped with dual inboard Volvo Penta D4-320 diesel engines at 640 hp (476 kW).

Alternative 5:

Marex 375 may be equipped with dual inboard Volvo Penta D4-300 Dpi diesel engines at 600 hp (447 kW).

The transmission is a Z-drive aka sterndrive.

The fuel tank has a capacity of 700.0 liters (184 US gallons, 153 imperial gallons).

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

EU classification

Marex 375 holds a CE certification:

The boat is by European Union certified as Class B. OFFSHORE:

Designed for offshore voyages where conditions up to, and including, wind force 8 (Beaufort scale) and significant wave heights up to, and including, 4 m may be experienced.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Marex 375 is about 286 kg/cm, alternatively 1604 lbs/inch.
Meaning: if you load 286 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1604 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Marex 375 is 3.39.

Compared with other similar motor boats it is slimmer than 66% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.

Curiosities

Powerboat?

In Denmark, you are required to have achieved a 'powerboat driving license' in order to sail a powerboat.
In this context a boat is considered a powerboat if:

Danish definition of a powerboat

According to this definition this boat is categorized as a Powerboat.

Maintenance

Boat owner's ideas

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

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Finally

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References

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.