Insuring Stem Marine: cover and premium
sailing boats and sailing yachts · Italy
Stem Marine builds sailing boats and sailing yachts in Italy. NAMMERT insures a Stem 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.
At a glance
Origin
Italy
Class
sailing boats and sailing yachts
Typical sizes
15,85 m (Stem 50)
Premium from
from €39 a year for liability
Worth knowing
Stem Marine; cover, cost and conditions
Stem Marine is based in Medesano in the province of Parma, Italy, and was founded in 1998 by Ezio Menna. The yard builds aluminium workboats for water rescue, firefighting, coastal patrol and public authorities. In 2024 it opened a division for sailing yachts, and the Stem 50 is its first model.
The Stem 50 is an aluminium cruising yacht of 15.85 metres with a beam of 4.42 metres, designed by Nicolas Purnu. The builder highlights crash boxes at bow and stern and three watertight bulkheads. The boat made its world debut at the Genoa Boat Show in September 2025.
For an aluminium yacht built for long passages, compare policies on cruising area, crew requirements and the agreed value including equipment. Insurers will usually also ask about the condition of the hull and its corrosion protection.
Questions and answers
Frequent questions
What else does Stem Marine build?
For Stem Marine: Aluminium workboats for water rescue, firefighting,
coastal patrol and public authorities.
How big is the Stem 50?
For Stem Marine: 15.85 metres long with a 4.42 metre beam, according to the builder.
The cover that fits
sailing yacht insurance
Tariffs, cover and FAQ for sailing yacht insurance in detail.
Third-party liability
The foundation for a boat from Stem Marine: damage to third parties, worldwide,
from €39 a year for liability.
Hull cover
Partial or full hull cover for a Stem Marine, at replacement value with an agreed fixed value.
For the whole class of boat
For Stem Marine: What matters for sailing boats and sailing 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, Stem Marine included.
Insuring sailing boats and sailing yachts, every brand and every condition
Other builders in this class
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 Stem Marine.
Current wind force and direction for your waters are shown on the Home.
Models by Stem Marine we insure
Each Stem Marine model has its own page with cover, cost and the points that matter for that boat.
Your model not listed?
We insure it all the same.
Stem Marine insured in five minutes.
Boat type, year built, length and value of your Stem Marine are all we need.
Work out the premium online or call us: +49 3375 29 12 77.
