Mantagua NAVISLIM 3NM Masthead Light (White 225°) – Horizontal Mount (Black or White Housing)
The Mantagua NAVISLIM 3NM Masthead Light is a compact, ultra-slim LED steaming light designed for horizontal mounting on sailing yachts. Emitting a white 225° sector in full compliance with COLREG 72, it provides the correct masthead lighting specification for larger cruising vessels.
This light is used when a sailing yacht is motoring or motorsailing and therefore classified as a power-driven vessel.
Who Needs the 3NM Version?
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2NM = For vessels under 12m LOA
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3NM = For vessels 12m–50m LOA
If your yacht is 12 metres LOA or greater, this is the correct masthead light specification.
Certified 3 Nautical Mile Visibility
This masthead light delivers a 3 nautical mile visibility range with luminous intensity exceeding 15 candela. The precisely defined 225° white sector ensures correct forward-facing coverage in accordance with international navigation regulations.
The increased intensity ensures greater visibility at distance, as required for vessels 12m and above.
UV-Resistant PC + ASA Marine Housing
The housing is manufactured from UV-stabilised PC + ASA, a high-performance marine engineering polymer blend designed for permanent exterior installation.
Polycarbonate (PC) provides exceptional impact resistance and structural strength, while ASA ensures excellent UV and weather resistance. This combination results in a durable, colour-stable housing that resists:
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UV degradation and fading
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Saltwater exposure
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Temperature cycling
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Surface brittleness over time
For larger cruising yachts that spend extended periods afloat, this ensures long-term durability in demanding marine environments.
IP67 Sealed and Energy Efficient
The NAVISLIM unit is fully sealed to IP67 standards, protecting the internal LED system from water ingress in harsh conditions.
Operating on 10–30V DC, it is compatible with both 12V and 24V onboard systems. Despite its higher output, it maintains efficient LED performance with a power consumption of 4.32W.
LED technology provides:
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Immediate full brightness
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Excellent resistance to vibration
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Long service life
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No bulb replacement
Ultra-Slim Horizontal Installation
With compact dimensions of H34 x L85 x W58mm, the horizontal mount format allows a discreet installation on mast brackets or horizontal mounting surfaces while maintaining a modern, low-profile appearance.
Each unit is supplied with a 2m pre-wired cable and stainless M4 mounting screws for straightforward installation.
Part of the NAVISLIM Horizontal Range
This 3NM masthead light forms part of the wider Mantagua NAVISLIM horizontal range, which includes:
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Port and starboard sidelights
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Combined sidelight
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2NM masthead light
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Stern light
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Twin port/starboard kits
Together, they allow yacht owners to install a fully matched, certified navigation lighting system with consistent styling and dependable marine-grade construction.
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