NaCzarter Team
· Updated
Masuria uses the inland waterway marking system: a red cylindrical buoy marks the right-hand side of the fairway, a green conical one the left, and the sides are counted "down the waterway" — from Pisz towards Węgorzewo. On top of that come shore boards in five groups, from prohibitions to information. This is not the maritime IALA system, and the two should never be mixed up — the lakes are governed by the 2003 regulation on navigation rules for inland waterways. Below we take the whole system apart, so that after one read you know which side to pass a buoy on and what a crossed-out anchor on a white board means.
How do you know where the "right side" of the fairway is?
This is the question that trips up most beginners. The right and left sides of the fairway have nothing to do with where you happen to be heading. They are fixed once and for all, looking "down the waterway" — the way you would follow a river's current. On the Great Masurian Lakes, "downstream" runs from Pisz to Węgorzewo, and the entire fairway, the charts and the pilot guides are all described in that direction.
In practice: sailing north from Pisz, through Mikołajki and Giżycko to Węgorzewo? You'll have red cylinders to starboard and green cones to port. Heading back south? The colours "swap" — the red buoys now appear on your left. Nothing is broken; you're simply looking at the same fairway against its notional flow.
So you don't have to work this out at every single buoy, remember the overriding rule: always keep to the right-hand part of the fairway, starboard side nearer the right bank. Regardless of direction and regardless of colours. It's the same logic as on the road — and for how exactly to pass other yachts, see our piece on right of way in Masuria.
Fairway buoys: red cylinder, green cone
A buoy's shape carries the same information as its colour — with the sun low under cloud, or looking straight into the light, the colour can be hard to make out, but the silhouette remains.
- Right side of the fairway (looking downstream, i.e. from Pisz): a red, cylindrical buoy. The topmark, if fitted, is a red cylinder. On shore, the right side may also be shown by a spar topped with a besom.
- Left side of the fairway: a green, conical buoy, with a green cone as its topmark.
- Fairway junction: a spherical buoy with horizontal red and green stripes — the fairway splits into two branches here.
Watch out for one internet trap: some materials circulate the colours the other way round, lifted straight from the maritime IALA system. On inland waters — Masuria included — a red buoy always marks the right side of the fairway and a green one the left, with no exceptions.
Shore signs: five groups of boards
Buoys lead you along the fairway, but a lot of the information stands on land: boards set up on banks, jetties and at bridges. The regulation divides them into five groups:
- A — prohibition signs,
- B — mandatory signs,
- C — restriction signs,
- D — recommendation signs,
- E — information signs.
Prohibitions are instantly recognisable: a white square or rectangular board with a red border and a red diagonal bar across it. A sign like this means the activity is absolutely forbidden.
Which signs will you actually meet in Masuria?
- No creating wash — a classic around harbours, canals and built-up shores. Motorboat wake slams moored yachts against the jetties, which is why this sign hangs there so thickly.
- No anchoring — the crossed-out anchor. It also covers dragging an anchor, chain or line, and often stands where cables or pipelines run along the bottom. For where and how to anchor properly, see our guide to anchoring in Masuria.
- No passage / no navigation — zones closed to traffic, nature reserves among them.
- No overtaking — mainly on narrow canals.
- No motorised craft — waters left to sails and oars.
- Speed limit — a white board with a number in a red border; the number is the maximum in km/h.
- Fairway depth and width restrictions (group C) — a board with a number you have to set against your own draught.
- Recommendation signs (D) — they suggest the recommended direction or side of passage, for instance through a bridge span.
- Information signs (E) — mooring places, water intake points, marinas.
Sailing materials often quote sign numbers like "A.6" or "C.1", but the numbering is inconsistent between sources. Learn the signs by their look and meaning, and for the full official rundown go to the Inland Navigation Office brochure on navigation marking.
Shoals and obstacles: the black-and-yellow warning
Specific hazards — shallows, rocks — get marks of their own, placed right at the hazard rather than along the fairway. This is where cardinal marks come in: black-and-yellow buoys and spars that tell you which side of a shoal or rock is safe to pass. On the Masurian route you'll meet them at shallows; in practice a yellow-and-black spar always means one thing — don't push in there, it's shallow. A separate category is the isolated obstacle, shown at night by a white light flashing in groups of two. Lights at obstacles follow their own logic too: green shows the left side, red the right, and an obstacle in the middle of the waterway is marked by a rhythmic white light.
Nowhere teaches more respect than Śniardwy — big water with stony shallows, where sticking to the marked fairway is not a formality but the condition for arriving with your centreboard and rudder intact. We've covered it in detail in our sailing guide to Lake Śniardwy.
How much waterway there is, and who looks after it
- The main navigable route Pisz – Węgorzewo runs about 86.6 km.
- The whole Great Masurian Lakes System adds up to roughly 145.6 km of waterways.
- Chart depths refer to low water — specifically a reading of 89 cm on the Giżycko water gauge.
- Transit depth according to the RZGW: 1.50 m on class Ia sections and 2.20 m on class II sections.
The route and its marking are maintained by Wody Polskie (Polish Waters), specifically the RZGW in Białystok. They set out and lift the buoys, announce the season opening (in 2026 the waterways of the Great Masurian Lakes system opened on 24 April) and publish navigation notices: water levels, disruptions, section closures. Check them before a cruise, just as you would the forecast — more on that in our piece on weather and safety in Masuria.
Quick crib sheet before you cast off
- Red cylinder = right side of the fairway (counting from Pisz towards Węgorzewo), green cone = left.
- Whatever the colours: keep to the right-hand part of the fairway.
- Sphere with red and green stripes = fairway junction.
- Yellow-and-black spar or buoy = shoal, give it a wide berth.
- White board with a red border and a diagonal bar = absolute prohibition.
- Number in a red border = speed limit in km/h.
- Before the cruise: RZGW Białystok notices + the weather forecast. How to read wind directions against your route is explained in our article on the wind rose.
Wody Polskie themselves also publish a solid overview of safety rules on the waterways.
Frequently asked questions
How is the Masurian sailing route marked? With the inland navigation sign system: buoys mark the edges of the fairway (red cylindrical — right side, green conical — left, counting "down the waterway" from Pisz to Węgorzewo), while shore boards in five groups (prohibition, mandatory, restriction, recommendation and information signs) regulate traffic. The marking is the responsibility of the RZGW in Białystok.
What do the buoy colours mean? A red cylindrical buoy marks the right side of the fairway, a green conical one the left, with the sides determined looking from Pisz towards Węgorzewo. A spherical buoy with horizontal red and green stripes marks a fairway junction. This is the inland system, different from the maritime IALA scheme.
How do you spot a shoal in Masuria? By the black-and-yellow marking: cardinal marks plus yellow-and-black spars and buoys point out shallows and obstacles. Treat them as a signal to steer clear. At night an isolated obstacle shows a white light flashing in groups of two.
Where do speed limits apply? Wherever a white board with a number in a red border stands — the number is the maximum speed in km/h. You'll meet these signs particularly around harbours, canals and built-up shores, often alongside a no-wash sign.
Where can I check current navigation notices? On the RZGW Białystok website (gov.pl, inland navigation section) — it carries water levels, disruptions and announcements about route openings and closures. The 2026 season on the Great Masurian Lakes started on 24 April.
That's the theory — it sinks in best at the helm, passing your first red cylinders on the fairway just outside the harbour. Pick a yacht from our Masurian fleet in the NaCzarter charter search and read the Pisz–Węgorzewo route with your own eyes.
Cover photo: Robert Drózd / Wikimedia Commons (CC BY-SA 3.0).
