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  • Seachoice Transom Lights

    Seachoice Transom Lights

    Seachoice Transom Lights offer 2 nautical miles of visibility, meeting USCG requirements for both...

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    Price: $17.82 to $18.18
  • Seachoice Halogen Floodlight

    Seachoice Halogen Floodlight

    The SeaChoice Halogen Floodlight is ideal for deck or dock illumination. It has a rigid fiber...

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    Price: $32.62
  • Seachoice Vertical Mount Stainless Steel Side Lights

    Seachoice Vertical Mount Stainless Steel Side Lights

    SeaChoice Vertical Mount Side Lights are visible from up to 1 mile away, and are certified for use...

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    Price: $34.65
  • Sea-Dog Round Stainless Steel Combination Bow Light

    Sea-Dog Round Stainless Steel Combination Bow Light

    The Sea-Dog Round Combination Bow Light has classic styling. Compact, stainless steel housing with...

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    Price: $23.73
  • Sea-Dog LED Stainless Combination Bow Light

    Sea-Dog LED Stainless Combination Bow Light

    The Sea-Dog LED Combination Bow Light is a long lasting, high visibility option for port/starboard...

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    Price: $50.78 to $64.85
  • Attwood LED Stainless Steel Sidelights

    Attwood LED Stainless Steel Sidelights

    Attwood LED sidelights in bi-color bow, red port, and green starboard configurations in your choice...

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    Price: $37.86 to $45.90
  • Attwood Stowaway Pole Light with Plug-in Base

    Attwood Stowaway Pole Light with Plug-in Base

    This all-round stowaway white pole light provides 2 miles of 360 degree visibility. Suited for...

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    Price: $40.36 to $44.84
  • Hella Series 2010 Fold Down Pole Mount Anchor/All-Round Lamp

    Hella Series 2010 Fold Down Pole Mount Anchor/All-Round Lamp

    Compact Hella 2010 lamps are approved for vessels under 20 meters (65 feet) in length. Use as...

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    Price: $39.51 to $46.83
  • Jabsco 135SL Remote Controlled Searchlight

    Jabsco 135SL Remote Controlled Searchlight

    The Jabsco 135SL is an entry-level remote control searchlight for boating and RV enthusiasts...

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    Price: $59.36 to $273.06
  • Jabsco Flood/Spotlight

    Jabsco Flood/Spotlight

    Jabsco replacement bulbs for floodlights and spotlights feature a sealed beam design to lock out...

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    Price: $80.72 to $132.27
  • Perko Horizontal Mount Stern Light

    Perko Horizontal Mount Stern Light

    The Perko 0965 horizontal mount stern light provides 2 mile nautical visibility for power boats and...

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    Price: $47.33
  • Perko Horizonal Mount Side Lights

    Perko Horizonal Mount Side Lights

    Perko Horizontal Mount Side Lights provide 1 nautical mile visibility for sailboats and power boats...

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    Price: $34.41 to $126.42
  • Seachoice Stainless Steel Spreader Light

    Seachoice Stainless Steel Spreader Light

    The SeaChoice Stainless Steel Spreader Light is a sealed unit requiring 12V. Includes steel...

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    Price: $45.66
  • Seachoice Bi-Color Bow Lights

    Seachoice Bi-Color Bow Lights

    Seachoice offers a variety of 12V Bi-Color Bow Light options, all of which feature red & green...

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    Price: $3.08 to $47.20
  • Seachoice Round Masthead Light

    Seachoice Round Masthead Light

    The Seachoice Round Masthead Light is a fixed mount light with a durable stainless steel base and...

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    Price: $12.03
  • Seachoice Stern Light

    Seachoice Stern Light

    The Seachoice Stern Light offers 2-mile visibility for sail or powerboats under 20 meters (65.6')....

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    Price: $52.51
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Boat Navigation Lights

Navigation lights are required on all boats underway or at anchor at night, from sunset to sunrise. Different types of boats will use specific combinations of nav lights in order to facilitate identification by other watercraft at night. Lighting requirements for pleasure craft varies by boat type and size. Generally speaking, marine navigation lights can be broken down into the following:

Sidelights: Red for the port side, and green for the starboard side. Sidelights must shine 22.5° abaft the beam and are always lit at night. Side lights may be combined into one housing as a bicolor light.

Tricolor Lights: Tricolor lights combine red and green sidelights and add a white stern light. They may be lit at night only when the boat is under sail. Tricolor lights are legal only on boats under 66 feet in length.

Sternlights: A white light mounted as close to the stern of the vessel as possible, the sternlight must shine through an arc of 135° and is always lit at night.

Masthead Lights: Also known as a Steaming Light or Bow Light, the Masthead light is white and only lit at night when the boat is under power. On sailboats, the masthead light is mounted approximately one third of the way down on the mast. On powerboats, the masthead light is sometimes mounted on a short spar or staff. The masthead light must be mounted above the sidelights. The masthead light must shine 22.5° abaft the beam on both sides so that it is visible to oncoming and overtaking vessels.

All-Round Lights: All-round lights shine through 360°. A White all-round light is is lit at night when the boat is at anchor.

Visibility range requirements (in nautical miles) vary by light type and boat size:
For Boats less than 39.4 ft. (12 meters) in length:

  • White, Red, Green All Round lamps, 2 miles
  • Masthead lamp, 2 miles
  • Port and Starboard lamps, 1 mile
  • Stern lamp, 2 miles
  • Tri-color lamp, 2 miles. (Sailing vessels under sail only)

Boats less than 65.6 ft. (20 meters) in length:

  • White, Red, Green All Round lamps, 2 miles
  • Masthead lamp, 3 miles
  • Port and Starboard lamps, 2 miles
  • Stern lamp, 2 miles
  • Tri-color lamp, 2 miles. (Sailing vessels under sail only)

Boats less than 164 Ft. (50 meters) in length:

  • White, Red, Green All Round lamps, 2 miles
  • Masthead lamp, 5 miles
  • Port and Starboard lamps, 2 miles
  • Stern lamp, 2 miles

LED vs Conventional Lighting

LED Navigation lighting is increasingly popular. LEDs consume less power and have longer services lives. Although service rating varies by manufacturer, a typical service life of 50,000 to 100,000 hours is touted by most. Longer life means fewer bulb replacements. LEDs can run on 12 and 24 volt systems without modification, run cooler, are highly shock and vibration resistan, and exceeds USCG requirements and ABCY A-16 certification. Standard incandescent navigation lights remain a popular and viable option for many boaters. Less expensive than LED lighting, there is a wider variety of models and styles available with standard bulbs.

Portable Navigation Lights are designed for boats under 23 feet in length and for boats without electrical systems. These portable light systems are typically powered by D-Cell or AA batteries. Portable lights resemble flashlights in appearance. and are available with LED or Krypton bulbs. Configurations include suction cup mounts, C-clamp mounts or glue-on mounts for inflatable boats.

Non-Navigation Exterior Lighting

Remote Control Searchlights are installed on larger craft can serve as a nighttime piloting aid and as an emergency signal when needed. Some models can be directed by a wireless remote control. A hand held searchlight on smaller craft may also serve the same functions. These lights typically feature high power halogen bulbs that provide candlepower ratings from 100,000 cp to 3,000,000 cp.

Deck Floodlights add a large margin of safety when crew members are working on deck at night. Available with sealed beam bulbs, halogen bulbs and low power LED bulb construction.

Spreader Lights are similar in size and function to deck floodlights but are optimized for use on sailboats. Deck illumination is an important safety concern for nighttime sailing. Available with sealed beam bulbs, halogen bulbs and low power LED bulb construction.

Underwater lights are designed to be submerged and illuminate the waters below the hull. Popular for night time fishing expeditions due to their fish attraction qualities, underwater lighting systems are suitable for offshore use, night diving, or as colorful accent lighting at the dock. Mounting requires either a 2" diameter hole in the hull (thru hull style) or surface mounting with a smaller hole for wiring and screws.

Underwater lights are offered in thru-hull styles (requiring a 2" diameter hole in the hull), and surface mount configurations (requires a smaller hole for wiring and mounting screws).

Additional Navigation Lighting Resources

The Chapman Book of Piloting and Seamanship is the essential guide for power and sail boaters. It contains an extensive chapter on navigation lights, rules, regulations and how to interpret running lights.

Understanding the Rules of the Road by Paul Boissier, offers a dynamic approach to collision avoidance, as well as explaining standard lights, shape and sound signals vessels use to communicate with each other.

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