Insuring STGi Marine: cover and premium

catamarans and multihulls · several countries

STGi Marine: catamaran builder. NAMMERT insures a STGi Marine regardless of year built or where you bought it, liability, hull, legal expenses and personal accident cover from one house, taken out online in five minutes.

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At a glance

Origin

several countries

Class

catamarans and multihulls

Typical sizes

10 to 14,9 m

Premium from

from €39 a year for liability

Worth knowing

STGi Marine; cover, cost and conditions

STGi Marine is the Tunisian yard that builds the Aventura catamarans, run by Eric Roger and his son Romain. Production started in 2005 at Tazarka, southeast of Tunis, and later moved to the Menzel Bourguiba free zone on Lake Bizerte. According to the multihull press, Samer Lasta draws both hulls and fit out. Sail and power catamarans share the Aventura name. The sailing models carry numbers close to their length in feet, while the power cats began as the Aventura 10 and 14.

Our model records hold eight STGi designs, split evenly between sail and power. The sailing catamarans are the Aventura 34, 37, 44 and 45; the power catamarans are the Aventura 10, Aventura 14, Aventura 37 Explorer and Aventura 50 MY. The 34 and 44 start the list in 2015, the power range follows from 2016 with the Aventura 10. Six models run into the most recent build years, the 45 ends in 2026 and the 50 MY in 2024. Lengths range from the 10.0 metre Aventura 34 to the 14.9 metre Aventura 50 MY: four models fall between 10.0 and 11.7 metres, four between 13.2 and 14.9 metres.

Two hulls mean two engines, two rudders and a wide beam to place in a marina, so many owners pick an end berth or a mooring buoy. The smaller Aventuras suit shallow anchorages and island hopping, the larger ones long stays aboard. Watch both saildrives or shafts, keep the trampoline and its lashings in good order and plan a haul out where the yard can lift a full beam catamaran.

Questions and answers

Frequent questions

Which Aventura models are power catamarans?

For STGi Marine: Four in our records: the Aventura 10, Aventura 14,

Aventura 37 Explorer and Aventura 50 MY.

The other four are sailing catamarans.

What is the largest Aventura in the records?

For STGi Marine: The Aventura 50 MY at 14.9 metres, listed from 2019 to 2024.

Among the sailing cats it is the 13.5 metre Aventura 45.

The cover that fits

For STGi Marine: What matters for catamarans and multihulls is the same across every brand;

engine output, how a claim is settled, cruising range and theft protection.

The class page lists every point and every brand in this class, STGi Marine included.

Insuring catamarans and multihulls, every brand and every condition

Other builders in this class

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Directory of all makes from A to Z

Nautical information What counts before you cast off, papers, equipment, waters

Licence

A powerboat licence (inland or coastal) is required from 15 hp (11.03 kW).

Registration

Registration from 3 hp; for trips abroad carry the boat certificate or flag document.

Waters

Inland, coastal and abroad; plan fairways, bridge clearances, draught and tides.

Equipment

Lifesaving gear, fire extinguisher, anchor, signalling equipment and correct navigation lights.

Cruising range

The agreed cruising range is stated in the policy and can be extended at any time.

Weather

Check wind force in Beaufort and wind direction before casting off, and allow for gusts.

General guidance, not a complete account;

what governs are the rules of the waters you are on and the manual of your STGi Marine.

Current wind force and direction for your waters are shown on the Home.

Series by STGi Marine, build years and cover

Aventura 10

Aventura 10 is a cabin catamaran from STGi Marine, built since 2016.

Aventura 14

Also a cabin catamaran, built since 2017.

Aventura 34

Also a cabin catamaran, built since 2015.

Aventura 37

Also a cabin catamaran, built since 2018.

Aventura 37 Explorer

Aventura 37 Explorer is a cabin catamaran from STGi Marine, built since 2023.

Aventura 44

Also a cabin catamaran, built since 2015.

Aventura 45

Also a cabin catamaran, built since 2022.

Aventura 50 MY

Aventura 50 MY is a cabin catamaran from STGi Marine, built from 2019 to 2024.

What this means for the cover

As the Aventura 10, Aventura 14,

Aventura 34 by STGi Marine and 4 more series are still in production,

parts are available and repair costs are predictable.

Even so, value it at replacement cost including retrofitted electronics, not at list price.

For the Aventura 50 MY by STGi Marine series the market value and the replacement cost often

differ widely.

An agreed value removes the age-based scale, and the figure in the policy stands.

For the Aventura 10, Aventura 14, Aventura 34 by STGi Marine and further series:

On catamarans the bridgedeck between the hulls is the sensitive part,

and the berth belongs in the application: double width often means a mooring rather than a marina.

All series at a glance

The STGi Marine range in figures

These figures come from the model records we keep for STGi Marine: boat type,

build years and length, nothing estimated.

cabin catamaran: 8 models, since 2015, 10 to 14.9 m

Which model was built when?

Sailing boat Motorboat RIBEach bar is one STGi Marine model, running from its first to its last year of build. The colour shows the type of boat.

What does a used STGi Marine cost?

We hold today’s price ranges by year for 6 models by STGi Marine.

The table shows what boats in average condition are worth,

from the oldest to the youngest year on record.

Choose your exact model, year and condition in the calculator.

Model	Years built	Range today
Aventura 10	2019 to 2021	€244,300 to €357,100
Aventura 14	2020 to 2022	€505,500 to €744,500
Aventura 34	2018 to 2021	€146,000 to €226,300
Aventura 37	2021 to 2023	€169,600 to €265,000
Aventura 44	2018 to 2021	€310,400 to €474,900
Aventura 50 MY	2022 to 2023	€705,200 to €942,800