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Insuring GSM: cover and premium

motor yachts · several countries

GSM builds motor yachts in several countries. NAMMERT insures a GSM 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

motor yachts

Typical sizes

Premium from

from €49 a year for liability

Worth knowing

GSM; cover, cost and conditions

Four motor yacht ranges are recorded, the GSM 35, 37 and 41 as well as the GSM Trawler 37, built between 1977 and 1985. At the beginning of every contract for such a boat stands third-party liability, because it covers the damage you cause to others with the boat.

NAMMERT offers it with a limit of indemnity of 10 to 50 million euros in the tariff levels Basis, Basis-Plus and Premium. Only then do limited hull cover and full hull cover build on it. Many harbours require proof of third-party liability before a berth is allocated at all.

For yachts from this construction period the agreed value is also important. It is set when the policy is taken out, settlement is made with no deduction for depreciation ("new for old"), in the Premium tariff without an age limit. The year of build, the place of purchase and previous owners do not stand in the way of a policy.

Questions and answers

Frequent questions

Why does third-party liability come first?

For GSM: It covers damage you cause to others and is the basis of every contract.

NAMMERT offers a limit of indemnity of 10 to 50 million euros in the levels Basis,

Basis-Plus and Premium.

Is full hull cover worthwhile for a yacht from the eighties?

For GSM: The decision depends on the agreed value.

Through the agreed value this is stated in the contract,

and settlement is made with no deduction for depreciation ("new for old"),

in the Premium tariff without an age limit.

The cover that fits

motor yacht insurance

Tariffs, cover and FAQ for motor yacht insurance in detail.

Third-party liability

The foundation for a boat from GSM: damage to third parties, worldwide,

from €49 a year for liability.

Hull cover

Partial or full hull cover for a GSM, at replacement value with an agreed fixed value.

For the whole class of boat

For GSM: What matters for motor yachts 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, GSM included.

Insuring motor yachts, every brand and every condition

Other builders in this class
Fassmer Feadship Ferretti Fjord Fleming Frauscher Galeon Gobbi Golden Yachts Grand Banks Greenline Gruno Hakvoort Hammermeister Heesen Hollandia Icon Yachts Ilver ISA Yachts Jachtwerf Kok Jeanneau Kadey-Krogen Linssen Lürssen

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 GSM.

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

Series by GSM, build years and cover

GSM 35

GSM 35 is a motor yacht from GSM, built from 1978 to 1985.

GSM 37

Also a motor yacht, built from 1978 to 1985.

GSM 41

Also a motor yacht, built from 1978 to 1985.

GSM Trawler 37

GSM Trawler 37 is a motor yacht from GSM, built from 1977 to 1984.

What this means for the cover

For the GSM 35, GSM 37, GSM 41 by GSM and 1 more series there is no list price left.

That is why we work with an agreed value: you state the figure, we agree it,

and in a total loss exactly that amount is paid, with no deduction for wear.

For the GSM 35, GSM 37, GSM 41 by GSM and further series:

On motor yachts the drive and the electronics together make up about half the value.

Both belong in the valuation, otherwise the sum insured is too low.

All series at a glance

The GSM range in figures

These figures come from the model records we keep for GSM: boat type, build years and length,

nothing estimated.

motor yacht
4 models, 1977 to 1985, 10.5 to 12.6 m

Which model was built when?

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

What does a used GSM cost?

We hold today’s price ranges by year for 4 models by GSM.

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.

ModelYears builtRange today
GSM 351981 to 1982€37,700 to €49,800
GSM 371981 to 1982€42,300 to €55,900
GSM 411981 to 1982€58,900 to €76,900
GSM Trawler 371980 to 1981€35,100 to €44,700

Estimate my boat

Estimate from our boat records, October 2026.

Not a survey.

Flybridge motor yacht seen side on at a pontoon

GSM insured in five minutes.

Boat type, year built, length and value of your GSM are all we need.

Work out the premium online or call us: +49 3375 29 12 77.

Open the online calculator Talk to a person
Two couples laughing on the flybridge of a white motor yacht cruising along a rocky coast in the sunshine

Ready to cast off?

Your boat. Your waters. We have your back.

A premium in one minute, a real person on the phone.

Or call us now: +49 3375 29 12 77

GSM: from €49 a year for liability

5 minutes · policy today

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