This warm white version of our Tower Navigation Bayonet bulb is a better choice for use behind colored (e.g., red, green, bi-color, tri-color) lenses as its full spectrum illumination more accurately produces the color that is desired for your running lights.

This is the highest output LED tower cluster available for marine use. It uses 18 surface mount cool-white (SMD) LEDs arrayed in 6 planes for 360° visibility. Proprietary PWM Constant-Current chipset results in high performance across the entire 10-30VDC range. This product may be used in red, green, bi-color, or tri-color navigation light fixtures that use a BAY15d bulb (double contact, offset pins). For anchor or stern white light we recommend our cool white version of this bulb, See ILTW1157-SMC

Application Note: Fits Aqua Signal Series 40, 41, 42,& 50 as well as Hella 2984 and Perko 200 Fixtures. Replaces Aqua Signal Bulb # 90005, Hella Bulb # 78290 and Perko Bulb # 037512V10W

Features & Benefits:

  • High output SMD LEDs
  • Meets COLREG 3nm visibility requirements
  • Meets anchor light visibility requirements for vessels up to 20m
  • Meets color/visibility (bi-color lenses) required for vessels up to 12m
  • Constant-current drive topology
  • Over-voltage protection
  • Thermally efficient design
  • Also compatible with 12VAC (supplied from transformers).

Important Notice:

Navigation lights are tested and approved as a fixture with the original equipment source (bulb) already installed. The operator of vessel assumes all liability when using this product as a replacement for the original approved light source. The use of this LED light source in individual navigation fixtures has not been evaluated for compliance to USCG, COLREG, or any other navigational lighting standards or regulations.

Tower Navigation Bayonet LED Bulb,Warm White 10-30VDC (3.0W), Omni-Directional, BAY15d Socket




Certifications & Compliance


Output Color

Warm White

Input Voltage

10-30VDC (&12VAC)

Bulb Socket Type

BAY15d (double contact, offset pins)


2 Years


1.1″ (28mm) Diam. x 1.57″ (40mm) + socket

Power Consumption

250mA/12V, 125mA/24V

Max Wattage


Approximate Ship Weight (lbs)

Weight 1 lbs
Dimensions 6.56 × 4.62 × 1.06 in


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