Rotomoulded polyethylene navigation buoys for harbour approaches, channel boundaries and open-sea hazard marking. Each buoy is moulded as a single piece from UV-stabilised virgin polyethylene at our İzmir facility; the internal cavity is filled with closed-cell foamed polyurethane or polystyrene — the body stays afloat even if punctured. IALA colour, light character and day-marking recommendations are applied to project conditions; optional solar LED flashing lantern, radar enhancer and AIS AtoN modules can be integrated. ASAKUA is an IALA member.
Direction buoy at harbour entrances, channel edges and shallow water hazards, marked to IALA colours. NB1250 and NB1750 are the standard selections for sheltered waters and in-harbour navigation; low freeboard, small mooring load, fast deployment.
Risk point, zone boundary and fish farm perimeter marking on open-ocean routes. NB2200, NB2600 and NB3000 larger models — high freeboard (3.1–5.1 m), heavy mooring load (1.1–2.8 t) and extended visibility range, engineered for open-ocean conditions.
Solar LED flashing lantern at the buoy top complements the IALA day mark with night visibility. Radar enhancer, AIS AtoN and RACON options provide integration with electronic navigation systems (ECDIS, AIS) — for modern harbours and traffic separation schemes.
The buoy body is rotationally moulded from UV-stabilised virgin polyethylene as a single piece — no seams, welds or joints. Five standard models span NB1250 to NB3000: diameter 1,250–3,000 mm, height 1.2–8.2 m, draft 480–1,100 mm, freeboard 1.2–5.1 m, maximum mooring load 175–2,850 kg, weight 75–2,800 kg.
The full internal cavity is filled with closed-cell foamed polyurethane or polystyrene — the body stays afloat even when damaged. Steel hardware (top light platform, bottom rings, ballast attachments) is hot-dip galvanised; optional ballast weight (180–420 kg) tunes the buoy's posture above water to project conditions. Colours and day-marking are applied to IALA recommendations.
Electronic aids to navigation are optional: solar power panel with LED flashing lantern, radar enhancer, AIS AtoN module, RACON. Buoy selection requires weight of mooring equipment, accessories to be installed, focal height required above water and the signing purpose — all evaluated together. ASAKUA supports product selection and on-site rigging; as an IALA member we track marine aids to navigation standards.