The boat navigation lights, in accordance with the International Regulations for Preventing Collisions at Sea (COLREGS), are signal lights (masthead lights, sidelights, stern lights, etc.) used at night or in poor visibility conditions to indicate a vessel’s position, course, and status.
They are crucial equipment for ensuring maritime safety and preventing collisions.
Common colors include:
- 🔴 Red = Port (left side)
- 🟢 Green = Starboard (right side)
- ⚪ White = Masthead / Stern
Visibility standards vary depending on vessel length.
🔎 Marine Boat Navigation Light Rules (COLREGS)
According to COLREGS, motorized vessels must display the following while underway:
- Masthead light (forward)
- Sidelights
- Stern light
Vessels less than 12 meters in length may use combination lights.
For vessels 20m ≤ L < 50m:
- Masthead light visibility: 5 nautical miles
- Other lights: 2 nautical miles
All vessels must display navigation lights:
- From sunset to sunrise
- In restricted visibility
- When necessary during daytime
Proper light configuration ensures mutual identification between vessels, reducing collision risk.
📌 I. Quick Reference to Core Boat Navigation Light Rules
All motorized vessels must display:
- Masthead light (white, 225° horizontal arc)
- Sidelights (red port / green starboard, 112.5° each)
- Stern light (white, 135°)
Minimum Visibility Distance (Based on Vessel Length)
| Ship Length (L) | Masthead Light | Sidelights / Sternlight | All-round Light |
|---|---|---|---|
| L ≥ 50m | 6 NM | 3 NM | 3 NM |
| 20m ≤ L < 50m | 5 NM | 2 NM | 2 NM |
| 12m ≤ L < 20m | 3 NM | 2 NM | 2 NM |
| L < 12m | 2 NM | 1 NM | 2 NM |
💡 II. Main Types and Functions of Marine Navigation Lights
| Light Type | Color | Horizontal Arc | Function Description |
|---|---|---|---|
| Masthead lights | White | 225° | Installed on centerline to indicate direction of travel |
| Sidelights | Red (port) / Green (starboard) | 112.5° each | Indicates vessel heading and relative position |
| Stern lights | White | 135° | Visible from aft |
| All-around lights | White / Red / Green | 360° | Used for anchoring and special conditions |
| Towing lights | Yellow | 135° | Installed above stern light when towing |
⚓ III. Boat Navigation Lights Configuration by Vessel Type
1. Powered Boats (Length < 12m)
Option A:
- Sidelights + all-around white light (combination light)
Option B:
- Sidelights + masthead light + stern light
Recommended Product: YFFY-NVH50L boat navigation lights
- 112.5° precise beam angle (COLREGS compliant)
- 316L stainless steel housing
- IP68 waterproof rating
- Multiple color options
- 3W power consumption suitable for 1 NM visibility
Ideal replacement for traditional halogen lights.
2. Powered Boats (12m ≤ L < 20m)
Must display:
- Masthead light
- Sidelights
- Stern light
If length ≥ 20m:
- Additional aft masthead light required
3. Sailboats
Under sail only:
- Sidelights + stern light
OR - Masthead tri-color light
Avoid displaying multiple configurations simultaneously.
Under power:
- Must follow powered vessel lighting rules
4. Human-Powered Boats (Kayaks, Windsurfing, etc.)
- At least one white all-around light or waterproof flashlight
- Must be used in time to avoid collision
🚨 IV. Anchoring & Special Situation Lighting
Anchored:
- One white all-around light (360°) at bow
- ≥50m vessels: additional stern light
Aground:
- Anchor lights + two vertical red lights
Not under command / restricted:
- Two vertical red lights or one depending on condition
Recommendation:
For buoys and temporary platforms, self-powered lighting is ideal.
Example: YFFY-LS-E solar marine boat navigation lights
- Built-in solar panel and battery
- 360° illumination
- Up to 24 NM visibility
- No wiring required
- Reduced maintenance cost
🔧 V. Installation and Usage Precautions
- Beam Angle Compliance
- Sidelights must maintain 112.5° arc
- Avoid obstruction by mast or equipment
- Dual Power Supply (≥20m vessels)
- Main + emergency power required
- Independent control recommended
- Routine Inspection
- Check brightness and color monthly
- Clean lenses regularly
- Low Visibility Conditions
- Lights should be used even during daytime
⚡ VI. Why Choose LED Boat Navigation Lights?
Traditional incandescent lights have disadvantages such as high energy consumption and short lifespan.
Modern LED navigation lights provide:
- Precise optical beam control (COLREGS compliant)
- Long lifespan (≥50,000 hours)
- Low power consumption (3W ≈ traditional 10W+)
- High protection (IP67/IP68)
- Resistance to salt spray and vibration
🧭 Professional Marine Navigation Lights Solutions
The YFFY series boat navigation lights are designed according to marine standards and provide:
- Full certification
- 3-year warranty
- Complete lighting solutions
Suitable for:
- Replacement of existing lights
- New vessel installations
- Solar-powered marine lighting systems
📩 Contact for Boat Navigation Lights Solutions
If you have questions about:
- Boat navigation light selection
- Installation positions
- Compliance requirements
Please contact us for professional technical support and customized solutions.
