ASAKUA
NAVIGATION BUOY — IALA-COMPLIANT AtoN

Navigation Buoy

Rotomoulded polyethylene navigation buoys for harbour approaches, channel marking and open-sea hazard warning. 5 standard models, NB1250 to NB3000 — 1,250 to 3,000 mm diameter, 175 to 2,850 kg mooring load. UV-stabilised body, closed-cell internal fill, hot-dip galvanised hardware. ASAKUA is an IALA member.

SYSTEM CORE

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.

APPLICATION SCENARIOS

Designed for these scenarios.

SCENARIO 01

Harbour approach and channel marking

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.

SCENARIO 02

Open-ocean hazard and boundary marking

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.

SCENARIO 03

Solar lantern and electronic AtoN integration

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.

TECHNICAL

Optimized structural behavior.

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.

Models
NB1250 – NB3000 (5 standard models)
Diameter range
1,250 – 3,000 mm
Height range
1,200 – 8,200 mm
Draft
480 – 1,100 mm
Freeboard
1,200 – 5,100 mm
Max. mooring load
175 – 2,850 kg
Body material
UV-stabilised virgin polyethylene, rotomoulded single-piece
Internal fill
Closed-cell foamed polyurethane or polystyrene
Optional
Solar LED flashing lantern / Radar enhancer / AIS AtoN / RACON / IALA day marking
GALLERY
RELATED PRODUCTS

Flashing Marine Lantern

Mooring Buoy

START A PROJECT

Bring your site data — let's design together.

Request a Quote