Saar & Moselle

The Moselle between Koblenz and the French border at Apach is developed as a federal waterway and canalized by a chain of weirs. Over roughly 240 kilometers of German stretch, the river overcomes a total elevation difference of about 82 meters. The water flows calmly, the navigation channel is marked, and the banks alternate between vineyards, small wine villages, and towns like Trier, Bernkastel-Kues, Zell, and Cochem.

The Saar flows into the Moselle at Konz and is navigable from Saarbrücken. It is considered a quieter, less busy tributary with its own lock profile, ideal for crews who want to avoid the heavier traffic on the main Moselle. A houseboat tour along the Saar-Moselle can therefore be planned so that the Saar serves as a peaceful entry or conclusion to the trip, while the Moselle itself offers the scenic highlight.

Those who wish to extend their journey beyond the German border can, with appropriate boat clearance, continue onto the Canal de la Moselle in France. There, the French waterway authority VNF operates locks such as Ars-sur-Moselle and Pagny-sur-Moselle year-round, with a defined high season from April 1 to October 31—a period that aligns with the German season and facilitates international route planning.

The navigation conditions are generally beginner-friendly for houseboats: no strong current in the classic sense, clearly marked channels, good buoyage. More challenging are:

• Lock passages, which require patience and precise maneuvering
• Commercial shipping on the main Moselle, especially near Cochem, Trier, and Koblenz
• Bridge heights and turning radii in tight river bends, which must be observed in windy conditions

If you account for these three factors, navigating the Saar and Moselle in a houseboat is relatively safe technically.

On the Moselle, alongside the large commercial locks, there are dedicated boat locks and boat lanes specifically designed for small pleasure craft and houseboats under 18 meters in length, 3.30 meters in width, and 1.50 meters in draft. These smaller facilities are free to use during the season and much quicker than passing through the large lock chamber together with cargo ships.

Important for planning:

Outside the season, houseboats must use the large lock chamber. This is generally possible, but subject to fees unless the boat slips through as a “co-slipper” alongside a commercial vessel. For most holiday crews, this is a reason to schedule their trip during the regular season.

The Moselle Commission confirms that all locks on the Moselle are completely shut down for about ten days each year so that the responsible national authorities can inspect and maintain the structures. For 2025, the Federal Waterways and Shipping Administration (WSA Mosel-Saar-Lahn) set this period from May 19 to 28, affecting locks such as Koblenz, Fankel, Enkirch, and Wintrich on the Moselle, as well as Kanzem, Rehlingen, and Saarbrücken on the Saar. While the reservoirs themselves remained navigable, lock operations were severely restricted.

Regional passenger ship schedules for Cochem and Zell explicitly noted “reduced shipping due to lock closures” during this period, with limited exceptions, for example at Fankel and Zeltingen. For houseboat crews, this means: trips scheduled for late May should verify the WSA’s current closure dates in advance, as these windows can shift slightly from year to year.

For cross-border routes, there is an additional restriction: according to a specialist portal for houseboats, navigation on the Moselle north of Nancy, including Toul, will be completely suspended from June 8 to 17, 2026, and again from May 31 to June 9, 2027. Anyone combining a tour between the Saar/Moselle in Germany and the Moselle in France must actively avoid these dates or adjust their itinerary accordingly.

As a fallback option outside the boat lock season, or in special situations, the large commercial locks are available. For example, the Koblenz lock, according to data from the electronic waterway information system ELWIS, is open 24 hours a day, year-round. This provides flexibility, but does not change the basic fee requirement for private vessels outside the boat lock season.

The question of whether a license is required is one of the most common uncertainties when planning a houseboat tour on the Saar and Moselle. In principle, for inland waterways in Germany: charter boats classified as license-free small vessels—typically with engine power below the legal limit and hull lengths up to 15 meters—can be operated without an inland sports boat license.

This classification is specific to each boat and does not apply uniformly to an entire fleet in a region. What matters is the registration of the individual vessel, not the area. Therefore, before each trip, the specific registration certificate for the boat type should be checked, and if in doubt, consulted with the responsible water police or the Federal Waterways and Shipping Administration.

For the French section (Canal de la Moselle), the regulations of the VNF apply; here too, there are categories of license-free charter boats, whose exact conditions may differ from German rules. When planning cross-border trips, it is essential to review the current national regulations, as details such as the minimum age of the skipper may vary.

Regardless of license requirements, the official guidelines for water sports on the federal Moselle waterway stipulate minimum equipment, including:

• at least one boat hook
• a bucket with a capacity of at least 7 liters
• a first-aid kit
• CE-certified life rings, at least one per person on board
• suitable fire extinguishers

This equipment is usually checked upon taking over the boat and is a prerequisite for using the locks.

How much distance is reasonable per day depends heavily on the number of locks, not just the distance. A sample itinerary published in 2026 for a June tour from Nancy and Toul via the Moselle and the Moselle Canal to Luxembourg illustrates this: around 170 kilometers require 24 lock passages, passing vineyards and towns like Metz, and crossing the Schengen area.

As a rough guideline for the German main Moselle:

• Lock-light sections: 30–40 km per day is comfortably achievable
• Lock-heavy sections: plan for 15–25 km per day
• Allow buffer time: factor in at least one hour per lock for waiting and passage, more when commercial shipping has priority

One week is enough for a relaxed loop between Trier or Konz and Cochem or Koblenz, with time for shore excursions in wine villages. If the Saar is included, two to three extra days should be planned for the additional leg.

Nautical information for the Apach–Koblenz section confirms: the boating season in this sector runs from April to October. Communication with lock and harbor authorities is via VHF channel 78, supplemented by published phone contacts for individual facilities—both should be recorded in the onboard logbook before departure.

Climatically, the region offers a temperate, continental river valley climate:

• April/May: mild temperatures, lighter boat traffic, but risk of the annual lock closure at the end of May
• June to August: warmest and busiest months, good conditions, higher demand at popular mooring spots
• September/October: stable weather, harvest atmosphere in the wine villages, calmer traffic

Weather-related high or low water levels can temporarily restrict navigation; the responsible Federal Waterways and Shipping Administration continuously publishes current gauge readings and route updates.

Without recommending specific providers, the supply infrastructure along the Saar and Moselle can be described generally as follows:

• Towns with full basic services: Trier, Konz, Bernkastel-Kues, Zell, Cochem, Koblenz, and Saarbrücken on the Saar offer supermarkets, pharmacies, and medical care within walking distance of typical mooring spots.
• Smaller wine villages: often have farm shops, bakeries, and dining options, but not always continuous local supplies; planning purchases 1–2 days in advance is advisable.
• Mooring spots vary greatly in amenities; some have electricity and fresh water connections, others are purely tie-up points with no infrastructure.

Onboard logistics is a central, often underestimated planning point:

• Fresh water: tank capacities vary depending on boat size; refilling is usually possible at larger marinas and ports, but not guaranteed at simple moorings.
• Waste/feces: onboard tanks must be emptied at designated stations; discharging directly into the Saar and Moselle is prohibited, as these are sensitive stretches with drinking water relevance.
• Fuel: diesel supply is concentrated in larger harbors and bases; range planning should be conservative, especially on quieter sections of the Saar.
• Electricity: shore power connections are available at many, but not all, mooring spots; onboard batteries and a generator should suffice for days without shore power.

These four points should be matched with the specific boat’s equipment before departure, as capacities can vary significantly depending on the boat type.

Families with children: the gentle flow and clearly marked riverbanks make the Saar and Moselle generally family-friendly. Life jackets for children must be carried onboard, regardless of the general life ring requirement. Lock waiting times should be planned as part of the itinerary, not seen as an inconvenience.

Dogs onboard: traveling with a dog is possible on most houseboats; sufficient non-slip deck space and regular landings are important, which can easily be combined with necessary lock stops and shopping breaks.

Accessibility: Access to houseboats varies greatly by model; some types feature ground-level living areas, while steps to the helm or aft deck are unavoidable on others. Wheelchair-accessible mooring spots are not widely available; it is advisable to inquire with the local municipality or marina before the trip.

Before every trip, the following should be checked:

• Current closure dates from the WSA Mosel-Saar-Lahn for lock maintenance work
• Cross-border closure windows on the French side, for example north of Nancy
• Gauge readings and flood warnings from the responsible waterway administration
• Radio channel and emergency contacts for the respective section, especially Channel 78

This information changes seasonally and annually; it should always be obtained directly from the relevant Federal Waterways and Shipping Administration or the Moselle Commission, rather than being taken from older travel reports.