Attachment 2 - Specification 506 Rev 7.pdf

Shore Infrastructure Logistics Center (SILC) Waterways Operations Product Line (WOPL)

United States Coast Guard

Washington, D.C.

November 12, 2025

Light Emitting Diode (LED) Marine Lanterns for Lighted Aids to Navigation

Specification No. 506

Revision 7

1. General. This specification is for the purchase of established, tested, and proven commercial off-the-shelf (COTS) LED lanterns for use as lighted marine aids to navigation.

1.1 Products. The following products are being sought for purchase:

Standalone LED Lantern.

Self-Contained LED Lantern (Short Range).

Self-Contained LED Lantern (Medium Range).

Self-Contained LED Lantern (Long Range).

2. Definitions and References.

2.1 Definitions.

2.1.1 Fixed aid lantern. A fixed aid lantern is a lighted beacon placed on a structure fixed to the ground or seabed and used as a maritime aid to navigation. It provides an omnidirectional fan-beam light signal, red, green, or yellow in color, visible to the mariner at a nominal range of 3 to 15 nautical miles (nm) and up to 18 nautical miles (nm) in the color white.

2.1.2 Buoy lantern. A buoy lantern is a lighted beacon placed on a buoy and used as a maritime aid to navigation. It provides an omnidirectional fan-beam light signal, red or green in color, visible to the mariner at a nominal range of 2 to 7 nautical miles (nm).

2.1.3 Range Lantern. A stationary searchlight-like pencil-beam lantern mounted on a tower on the extension of the centerline of a channel. Used in conjunction with a second range lantern mounted behind and higher than the front range lantern. Delineates the centerline of the channel when the lights are vertically aligned.

2.1.4 Self-contained lantern. A self-contained lantern is a lantern that integrates into a single environmentally protected package all components necessary to independently power and operate the lantern over an extended period. A self-contained lantern integrates all components into a single, cohesive package. When installed on a fixed aid or buoy, a self-contained lantern does not need to be connected to any other equipment to operate. Some of the components that comprise a self-contained LED lantern are LEDs, electronic power/timer controllers, solar power generation (i.e., solar panels) charge control/regulation, energy storage devices (i.e., batteries), and a housing which incorporates the light lensing.

2.1.5 Standalone Lantern. An LED lantern that requires only an external 12 VDC power source to operate but is fully protected from the environment without requiring a separate protective housing of any type for normal operation.

2.1.6 Optic Head. The lantern’s optic head consists of the LEDs and the housing which incorporates the necessary lensing to control the vertical light distribution (and horizontal divergence for range lanterns). The electronic power/timer controllers and all other equipment needed to produce the light signal, given power from the battery or an external 12 VDC power source, may be housed in a separate assembly that is part of the lantern.

2.1.7 Solar Power System. The solar power system is comprised of solar panels that collect solar photovoltaic energy and produce electrical energy, the battery that receives and stores electrical energy from the solar panels and delivers electrical power to the optic head, and associated wiring and electronic control systems to prevent overcharging the battery (charge controller/regulator).

2.1.8 Autonomy. The autonomy of a lantern’s battery is the time - in days - a battery will take to discharge from a fully-charged state (100% state of charge) to a 20% state of charge without any energy input from the solar panels or any other power source and at a rate of discharge dependent on a specified lantern intensity.

2.1.9 Fan beam. A fan beam is one in which the light output of a lantern is concentrated in the horizontal plane. It is the beam that must be projected when a fixed light of uniform intensity around the horizon is required. A fan beam is an omnidirectional beam.

2.1.10 Spread Lens. Spread lenses are sometimes used on range lanterns to increase horizontal divergence. Various lenses are available to provide horizontal divergences up to 30 degrees (typical).

2.1.11 Characteristic. To aid in recognition and conspicuity, and to reduce power consumption, marine aids to navigation lights are generally flashed. Required flash rhythms are detailed in Section 3.

2.1.12 Duty cycle. For a given characteristic, the amount of time a light is energized during one cycle divided by the total time period of the cycle. Example: a Quick Flash light is energized for 0.3 seconds, then de-energized for 0.7 seconds. The period is 0.3 + 0.7 = 1.0 second. The duty cycle is 0.3 seconds / 1.0 second x 100 = 30%.

2.1.13 Luminous intensity. The luminous flux over a solid angle for a source, measured in units of candela, as defined by International Organization of Marine Aids to Navigation (IALA), in the IALA International Dictionary of Marine Navigation, Chapter 2, Section 2-1, Definition 2-1-035.

2.1.14 Peak luminous intensity (peak intensity). The maximum luminous intensity that a light source can provide, in each direction.

2.1.15 Equivalent peak luminous intensity (equivalent peak intensity). The Talbot-Plateau Law states that if a light is rapidly flashed at a rate so that it appears fused to the observer, the light will match in brightness a steady light that has the same time-average luminance. Therefore, for an LED source modulated at some frequency above the fusion frequency, an equivalent peak intensity will be calculated using the following equation:

where:

Ieq = equivalent peak intensity, in candela (cd) T = the time period over which the light signal is rapidly flashed I = luminous intensity, in candela (cd)

2.1.16 Effective luminous intensity (effective intensity). The perceived intensity of a flashing light by the human eye is lower than that of a fixed light of equal peak intensity due to the nature of detecting light by the human eye. International Organization of Marine Aids to Navigation (IALA) “Determination and Calculation of Effective Intensity” E-200-4 w/ Edition 2.0 December 2017, describes the Modified Allard method for calculating the effective intensity of a rhythmic light. For the purposes of this specification, and assuming that the Intensity vs. Time profile for a flashed LED light is a square wave, the Coast Guard will use either the Modified Allard method or the Schmidt-Clausen method with the visual time constant, c, changed from 0.2 second to 0.1 second, which provides identical results. Using the Schmidt-Clausen method, and assuming a square wave Intensity vs. Time profile, the effective intensity (Ie) of a flashing LED signal is given by:

where:

Ie = effective intensity, in candela (cd) Io = peak intensity, in candela (cd), of the light signal (or the equivalent peak intensity for a rapidly flashed light) c = a visual time constant, taken to be 0.1 second for night-time observations Δt = the shortest “on” time for a given characteristic

2.1.17 Flicker fusion frequency (FFF). There is a frequency at which a rapidly pulsed light signal will transition from an appearance of flicker to a steady state. The frequency at which that transition occurs is the flicker fusion frequency (FFF). Pulsed light signals operating below this frequency will be noted as flickering by observers. Factors which impact on the FFF include the intensity of the light signal, the ambient illumination level of the background, the observable area of the signal, and the level of dark adaptation of the observer. Fusion of a flickering light may occur at frequencies as low as 10 Hz, to as much as 100 Hz. For the purposes of this specification, a frequency of 100 Hz or greater shall be considered sufficient to ensure fusion of light pulses at detection levels.

2.1.18 Absolute Maximum Current Rating. Maximum continuous current (and therefore maximum power dissipation) that an individual LED can endure before exceeding the maximum specified junction temperature. Junction temperatures which exceed the maximum rating adversely impact the LED’s reliability, longevity, as well as its predicted luminous performance and may result in device degradation and failure.

2.2 References.

2.2.1 The International Organization of Marine Aids to Navigation (IALA) Publications.

2.2.1.1 IALA International Dictionary of Marine Navigation, original IALA Dictionary (2009 Edition).

2.2.1.2 IALA Recommendation E-200-4 w/ Edition 2.0 “Marine Signal Lights, Part 4 - Determination and

Calculation of Effective Intensity” December 2017.

2.2.1.3 IALA Recommendation E-200-1 “Marine Signal Lights - Colours” Edition 3 (December 2018).

2.2.2 Military Standards.

2.2.2.1 MIL-STD-202G, Method 104A, Immersion Test, October 1956.

2.2.2.2 MIL-STD-202G, Method 213B, Shock Test, April 1973.

2.2.2.3 MIL-STD-202G, Method 204D, Vibration Test, April 1980.

2.2.3 Industry Standards.

2.2.3.1 EN 61000-4-3:2006/AMD2:2010, Electromagnetic Compatibility.

2.2.3.2 EN 61000-4-2:2008, Electrostatic Discharge Immunity.

3. Performance Requirements.

3.1 Optical Performance.

3.1.1 Intensity Measurements. Intensities are to be measured after values stabilize to account for intensity reduction due to LED junction heating. Intensity requirements shall be met by a lantern operating through the full range of ambient operating temperatures specified in Section

3.4.1. Intensities shall be determined by the value met or exceeded by 90% of the values measured in the horizontal focal plane. Lanterns that use rapidly pulsed LEDs to provide the light signal shall operate at frequencies equal to or greater than 100 Hz. For lanterns using rapidly pulsed LEDs, the time-dependent output of the lantern shall be recorded, and the Talbot-Plateau Law shall be used to determine the equivalent peak intensity.

3.1.2 Effective Intensity. Use either the Modified Allard or Schmidt-Clausen method to calculate effective luminous intensity. Based on the assumption that the LED intensity-vs.-time profile is a square wave, the Schmidt-Clausen method will yield an effective intensity (Ie):

Where:

Io = the 90th percentile fixed intensity in the horizontal focal plane (as recorded on a polar plot) t = the flash length in seconds

3.1.3 Intensity and effective intensity. Fixed Intensity and effective intensity for each type of lantern are detailed in the Data Sheets in Section 6. Variable intensities are required, and an external programmer may be used to set them. Intensity shall not be reduced below the set value based on duty cycle. Effective intensity correction applies only to the omnidirectional fan-beam LED lanterns; it does NOT apply to LED range lanterns.

3.1.4 Vertical Divergence. The lantern shall have a minimum vertical divergence such that the angle between the 50% intensity points above and below the focal plane meets or exceeds the salient characteristics in the Data Sheets in Section 6.

3.1.5 Horizontal Uniformity of Output (for omnidirectional lights only). The lantern shall produce an omnidirectional horizontal fan beam. The peak intensity of the beam, in any direction in the focal plane (except in the direction of a lens molding seam), shall not vary by more than ± 20% from the mean. This may require sorting of LEDs. The intensity profile about any lens molding seam shall not be less than 60% of the mean horizontal output over an angle of not more than 2°.

3.1.6 Beam Alignment. The projected beam(s) from the LED(s) referenced to the mounting surface of the lantern shall be within ± ½ degree of the optical axis, defined as a line parallel to the mounting surface.

3.1.7 Degradation. The lantern shall be designed to maintain at least 80% of its original effective intensity over 10 years of operation when operated at night with a 30% duty-cycle flash characteristic.

3.1.8 Signal Colors. The chromaticity of the white, yellow, red, and green colors provided by the lanterns shall lie within the International Organization of Marine Aids to Navigation (IALA) optimum region. Corner chromaticity coordinates for the optimum region are provided in IALA Recommendation E-200-1 “Marine Signal Lights - Colours” Edition 3 (December 2018).

3.1.9 Daylight Control. The lantern shall switch on and off at sunset and sunrise, respectively. The lantern shall switch on whenever the ambient illumination, measured in the horizontal plane, falls below 250 ± 50 lux. The lantern shall not switch off until the ambient illumination rises above 320 ± 50 lux. The daylight control, and associated illumination control circuitry shall be designed so that when ambient light levels are below the ambient “turn-on” level, the operation of the lantern and its proper display of the desired flash characteristic shall not be affected by the light from the lantern.

3.1.10 Flash Characteristic Control System. Each lantern shall be capable of producing all standard U.S.

Coast Guard flash characteristics, as outlined below, including one custom-programmable characteristic that will be used for custom flash rhythms, and shall include control circuitry to permit field selection of any desired characteristic. The characteristics shall be incorporated into the lantern and may be accessed via dip or rotary switches or an IR remote control programmer. Programming a lantern via the Bluetooth wireless communication protocol shall not be permitted; therefore, all proposed Bluetooth-compatible lanterns shall have the Bluetooth programming capability permanently disabled for setting any and all of the lanterns’ parameters.

The various characteristics which the lantern must be capable of displaying are shown in the table below.

Timing Timing Sequence (Sec) Duty Rhythm F 1 E 1 F 2 E 2 F 3 E 3 Cycle

FL15 (1) 1.00 14.00 0.07

FL10(1) 1.00 9.00 0.10

FL 6 (.6) 0.60 5.40 0.10

FL5 (.5) 0.50 4.50 0.10

FL 4 (.4) 0.40 3.60 0.10

FL 2.5 (.3) 0.30 2.20 0.12

Q 0.30 0.70 0.30

FL (2) 5 0.40 0.60 0.40 3.60 0.16

FL (2) 6 1.00 1.00 1.00 3.00 0.33

FL (2+1) 6 0.30 0.40 0.30 1.20 0.30 3.50 0.15

Mo (A) 0.40 0.60 2.00 5.00 0.30 Iso 6 3.00 3.00 0.50 Occ 4 3.00 1.00 0.75

FL 6 (1) 1.00 5.00 0.17

FL 4 (1) 1.00 3.00 0.25

FL 2.5 (1) 1.00 1.50 0.40

Iso 2 1.00 1.00 0.50 Iso 4 2.00 2.00 0.50

FIXED

Custom

Continuous

1.00

3.1.11 Light Intensity Control System. At each of the light intensity settings the LED driver shall be designed to obtain predictable and matched luminous intensity and chromaticity from each LED, and to avoid exceeding the LED’s Absolute Maximum Current Rating and compromising reliability and longevity. The luminous intensity and chromaticity shall remain relatively constant over the full range of environmental operating conditions and for all light characteristics specified in this specification. Lantern intensity programming via Bluetooth shall not be permitted. Bluetooth-compatible lanterns shall have the Bluetooth capability disabled.

3.2 Power and Control Systems.

3.2.1 Input Power (using external power systems). The LED lantern shall operate properly with input voltages between +10.5 and +18 VDC. The nominal input shall be +12 VDC, as provided by existing U.S. Coast Guard solar power systems outfitted with lead-acid batteries or 12 VDC power supplies. When the LED lantern is commanded off (daytime or during eclipse), the lantern’s quiescent current shall not exceed the maximum values presented in the Data Sheets in Section 6. Likewise, when the LED lantern is commanded on, day or night, the power consumption shall not exceed the maximum values presented in the Data Sheets in Section 6.

3.2.1.1 Synchronize Control (all lanterns; optional for self-contained lanterns). The lanterns shall have provisions for synchronization to another lantern(s) covered under this specification via hard-wire and shall operate in accordance with the following requirements: The synchronized lantern shall mimic the flash rhythm of the main lantern and shall turn on/off when commanded by the daylight control connected to the main lantern; a synchronized lantern may have a day power requirement that equals its night eclipse power consumption; the synchronization control shall be capable of receiving a timed input of +5 to +13 VDC coinciding with the flash of the main light with a decay time of less than 100 milliseconds; the synchronization control shall be capable of driving at least a one (1) milliamp load; and If necessary, an optional sync module (installed inside one of the lanterns) may be used to invert/convert the incoming sync pulse to establish sync compatibility between two lanterns from different manufacturers that have inverted sync control protocols (i.e., trailing edge vs. leading edge sync triggers).

3.2.1.2 GPS Synchronize Control (all lanterns – optional). The lanterns may have provisions for synchronization to another lantern, as stated in 3.2.1.1, using the GPS system. To establish a standard among the LED lanterns submitted for consideration and to ensure that all compliant lanterns remain synchronized to one another, despite make and model, the synchronization reference time (GPS Epoch) for all lanterns shall reset to zero nightly at midnight.

3.2.2 Integrated Solar Power System (Self-Contained Lanterns Only). The lantern shall include all devices required for power generation and energy storage necessary to produce and emit the required light signals. One or two integrated power systems can fulfill the requirements (i.e., small and large).

3.2.3 Batteries (Self-Contained Lanterns Only). Battery service life shall not be less than five years

(where one year of service is considered to equal approximately 4,800 hours of lantern use) while operating in the harsh environmental conditions specified Section 3.4. The battery shall be functional and capable of operating the lantern at -20° C and down to a low state-of-charge of 75% without freezing and without being prone to recharge problems. Battery Material Safety Data Sheets (MSDS) shall be provided with each self-contained lantern covering the specific battery type used inside the lantern.

3.2.3.1 Maintenance Free Battery. The battery shall be maintenance-free.

3.2.3.2 Commercially Available Battery. The battery (or replacement battery) is a deliverable option in the contract for ease of future battery purchase and replacement. The battery shall be U.S.-sourced so that it can be purchased under the contract directly from the contractor or commercially from a third-party vendor and replaced by Coast Guard servicing personnel in a timely and cost-effective manner. It shall be mounted in the lantern in a manner that will allow for easy replacement. The battery shall be secured using standard hold-down hardware and connected electrically with fasteners (e.g., ring lugs or other slip-on type connectors). An externally accessible, weather-proof battery charging port (i.e., socket or connector) is optional.

3.2.3.3 Ready for Use. The lantern shall be shipped with the battery installed and completely ready for use (except for initial re-charging). For self-contained lanterns, a storage mode feature is required to prevent inadvertent activation while being shipped in a box or stored prior to use.

3.2.3.4 No-Leak. The battery shall not leak when stored for an extended period of time in any orientation.

3.3 Service Life and Maintenance. For purposes of calculation, one year of service is considered to equal approximately 4,800 hours of lantern use. Depending on the duty cycle, and whether a rapidly pulsed signal is used, the actual emitting time for the LEDs will range from about 240 to 1440 hours. The replacement interval is defined for the purposes of this specification as the mean time for total lumen output of the lantern to be reduced to 80% of initial (rated) output, due to LED failure or fatigue.

3.3.1 Service Life. The lantern shall have a service life, based on producing a flash characteristic with a 30% duty cycle during nighttime operation, of not less than 10 years.

3.3.2 Maintenance. The lantern and all its components shall not require preventive maintenance other than periodic cleaning of external surfaces. The design of the lantern shall be to restrict the ability of birds to roost on the lantern or any of its components.

3.3.3 Labeling. The lanterns’ power input terminals and/or wires shall be labeled either “+” and “-” or colored “black” and “white,” respectively (for input power). Wires for daylight control and sync, if applicable, shall be clearly labeled as well. The label for the lantern shall include the model, serial number, manufacturer’s name, and LED version (if applicable). Power and intensity settings do not need to be displayed.

3.4 Environment. The lantern shall meet or exceed all the requirements of this specification under the environmental conditions outlined below. Results from in-house testing are acceptable if documented and available for review; otherwise, a certificate from an accredited laboratory is required.

3.4.1 Ambient Temperature. Exposure to temperatures from -20° to +50° C.

3.4.2 Humidity. Exposure to relative humidity from 0 to 100%, including driving rain at 45° from vertical.

3.4.3 Immersion. Immersion in hot and cold fresh tap water for 15 minutes in accordance with MIL-

STD-202G, method 104A, condition A or B.

3.4.4 Icing. Exposure to ice loading up to 22 kg per square meter.

3.4.5 Wind Speed. Exposure to wind speeds up to 140 knots.

3.4.6 Salt Air and Seawater Spray. Continuous exposure to salt air and seawater spray.

3.4.7 Ultraviolet exposure. All the external components of the lantern shall be designed to operate under and withstand continuous exposure to ultraviolet light for the duration of the advertised service life of the lantern, as is typically encountered at sea level, at 20° North latitude.

3.4.8 Shock and Vibration. The lantern shall be constructed to operate under and withstand continuous exposure to the shock and vibration experienced on buoys and single-pile aids to navigation structures. The lantern shall not be damaged and continue to operate after being exposed to MIL-STD-202G, Method 213B, 30Gs Minimum vertical and 35G’s horizontal shock, and MIL-STD-202G, Method 204D, condition B limited to 5G’s vibration in all axes but with duration reduced from twelve to three 20-minute cycles in each of three mutually perpendicular axes (x, y, & z) for a total of nine complete cycles (180 minutes total).

3.4.9 Electromagnetic Interference. The lantern shall not be susceptible to or damaged by interference from radiating devices normally found in the marine environment. This includes signals from VHF and UHF radio and marine radar. Tests shall be in accordance with EN 61000- 4-3:2006/AMD2:2010 Part 4-3, Radiated, Radio Frequency, Electromagnetic Field Immunity. The test shall cover at least the frequency ranges of 80 MHz to 1,000 MHz and 1.4 Ghz to 6 Ghz; and the minimum test power level shall be Level 1 = 1 V/m Test Field Strength (according to Table 1 in Paragraph 5, “Test levels,” in EN61000-4-3).

3.4.10 Electrostatic Discharge. The lantern shall incorporate protection from static discharges of up to

25K volts, as may occur due to nearby lightning strikes. Tests shall be in accordance with EN 61000-4-2:2008 Electrostatic Discharge Immunity, Level 4, 15kV in air, Class A or B.

3.5 Size and Mass (Self-Contained Lanterns). The lantern shall be made of lightweight, yet durable, materials. The lantern shall not exceed the maximum allowances for size and weight specified below.

3.5.1 Maximum Height (Self-Contained Lanterns). The overall height of the lantern (including an adapter if applicable – see Section 3.6.1.3), exclusive of bird deterrents and antennas, shall not exceed 66 cm.

3.5.2 Height of Solar Panels (Self-Contained Lanterns). The bottom edge of the solar panels shall be not less than 1 cm above the top surface of the lantern’s mounting base.

3.5.3 Mass (Self-Contained Lanterns). The mass of the complete lantern shall not exceed 20 kg.

3.6 Mounting Provisions.

3.6.1 Mounting provisions (Omnidirectional Lanterns). Omnidirectional lanterns shall be designed so that they can be attached to the structure or buoy using three bolts, equally spaced on a 200-mm diameter bolt-hole circle. Any of the following three mounting methods listed below is acceptable:

3.6.1.1 Mounting method 1. The base of the lantern shall have three, unthreaded bolt holes, equally spaced on a 200 mm diameter bolt circle. The bolt holes shall be 16 ± 1 mm in diameter and may be elongated to form closed, arced slots. There shall be not less than 5 cm of working space above the bolt holes to allow installation of ½”-13 UNC bolts or nuts and to secure with conventional hand tools. The bottom of the lantern base shall be parallel to the focal plane of the lantern.

3.6.1.2 Mounting method 2. The base of the lantern shall have three, threaded bolt holes, equally spaced on a 200 mm diameter bolt circle. The threaded bolt holes shall accept ½”-13 UNC bolts that will be inserted straight up through holes in the buoy’s lantern mounting plate then into the lantern’s threaded bolt holes. The threaded bolt holes shall be not less than 2 inches deep. The depth of the bolt holes and the material composition of the threaded bolt holes shall be such that the lantern can withstand the environmental conditions specified in Section 3.4. The bottom of the lantern base shall be parallel to the focal plane of the lantern.

3.6.1.3 Mounting method 3. The lantern can be supplied with an adapter to be positioned between the lantern and the structure’s lantern mounting plate. The lantern shall be bolted to the top of the adapter using hardware supplied by the manufacturer. The adapter shall be designed so that it can be attached to the structure’s lantern mounting plate using either Mounting Method 1 or 2 described in Sections 3.6.1.1 or 3.6.1.2 respectively. The bottom of the adapter shall be parallel to the focal plane of the lantern. If an adapter is used, the lantern/adapter combination shall meet all requirements of this specification, including the size and weight requirements in Section 3.5 for Self-Contained Lanterns.

3.6.2 Mounting Provisions (Range Lanterns). Lanterns shall have a 2- or 3-hole mount so that the base or optic head can be leveled in the direction of the projected beam. Holes shall be ⅜” (minimum) to ½” (maximum) in diameter to facilitate the use of stainless-steel leveling bolts and hardware. The optic head or the base of the range lantern shall be capable of being rotated up to 360-degrees to align with the channel centerline. The mounting holes may be comprised of elongated closed arced slots as long as the full range of rotational adjustability is achieved by re-orienting or flipping the base.

3.7 Design Tools. Web-based, internet-accessible, online lantern-selector and current-calculator program tools shall be made available to all USCG LED lantern users by the successful LED lantern contractor(s).

3.7.1 Lantern Selection Tool for Self-Contained LED Lanterns. A lantern-selection (or selector) tool shall be provided either as a Microsoft Excel spreadsheet or made available on the Contractor’s website to assist users in the selection of a self-contained LED lantern for a given geographic position in the U.S. and its territories. The purpose of the lantern-selection tool is to provide the user a recommended lantern that will operate indefinitely under a specific color, flash rhythm, and effective intensity with a minimum battery state of charge (SoC) of 75% and an autonomy of at least 10 days (i.e., it shall take at least 10 days for the fully-charged battery’s state of charge to drop from 100% to 20% without energy input from the solar panels); the LUX transition levels for day-to-night switching shall be 250L ± 50L and the night-to-day shall be 320L ± 50L.

3.7.2 Current Calculator Tool for Standalone LED Lanterns. A current-calculator tool shall be provided either as a Microsoft Excel spreadsheet or made available on the Contractor’s website to determine the current consumption value in amperes during flash of all the standalone LED lanterns listed in this spec operating at 12 VDC input voltage and at temperature +20 to +25 deg C, for a given color, flash rhythm, and effective intensity (for omnidirectional LED lanterns) or peak intensity (for range LED lanterns). This critical power consumption information will be used subsequently in USCG solar-sizing programs to determine the appropriate size of a new solar power system or to verify an existing one.

3.8 Automated Information System (AIS) (Self Contian Lantern Long Range). To comply with USCG’s emerging Physical AIS-ATON needs, an integrated Type 3, Message 21 broadcast capable AIS version of the Self-Contained LED Lantern is required (see Data Sheet 4).

4. Quality Assurance.

4.1 Inspection of Supplies—Fixed-Price. The Contractor shall provide and maintain an inspection system acceptable to the Government covering supplies under this specification and shall tender to the Government for acceptance only supplies that have been inspected in accordance with the inspection system and have been found by the Contractor to be in conformity with the specification requirements. As part of the system, the Contractor shall prepare records evidencing all inspections made under the system and the outcome. These records shall be kept complete and made available to the Government during contract performance and for as long afterwards as the contract requires. The Government may perform reviews and evaluations as reasonably necessary to ascertain compliance with this paragraph. These reviews and evaluations will be conducted in a manner that will not unduly delay the contract work. The right of review, whether exercised or not, does not relieve the Contractor of the obligations under the contract. The Government has the right to inspect and test all supplies called for by the contract, to the extent practicable, at all places and times, including the period of manufacture, and in any event before acceptance. The Government will conduct inspections and tests in a manner that will not unduly delay the work. The Government assumes no contractual obligation to perform any inspection and test for the benefit of the Contractor.

4.2 Warranty. A repair or replacement warranty for a period of three (3) years to cover material defects and/or defective operation of the lantern, exclusive of the battery in self-contained LED lanterns, is required and shall apply to all LED lanterns offered for consideration; the battery in self-contained LED lanterns shall have a one (1) year warranty to protect against latent defects and premature battery failure.

5. Packaging. The lanterns shall be packaged individually in accordance with standard commercial practice, suitable for reshipment.

5.1 Marking. The lantern packages shall be clearly marked with the contents (example: “Red LED lantern Model XYZ”), manufacturer, weight, unit quantity, and if applicable, stock number and contract number along with the barcodes (provided after contract award for items stocked at the USCG warehouse).

6. Data Sheets. The following Data Sheets describe the USCG’s operational requirements. In addition to meeting all the requirements of Section 3, each LED Lantern submitted for consideration that meets or exceeds the performance requirements and specific salient characteristics in each Data Sheet will be considered.

6.1 Data Sheets. (Attached)

6.1.1 Data Sheet 1. Standalone LED Lantern.

6.1.2 Data Sheet 2. Self-Contained LED Lanterns (Short Range)

6.1.3 Data Sheet 3. Self-Contained LED Lanterns (Medium Range)

6.1.4 Data Sheet 4. Self-Contained LED Lanterns (Long Range)

Data Sheet 1

Standalone LED Lantern Salient Characteristics

General: Standalone LED Lanterns submitted for consideration that meet or exceed the requirements in this Data Sheet along with all the requirements of Section 3 of this Specification will be considered. An IR remote control programmer shall be included and shipped with each deliverable Standalone LED Lantern.

Features: • Standalone LED lanterns include the light source and control system requiring only an external 12 VDC power source to operate.

• Fan beam.

• Lantern available in the following colors: white, red, green, and yellow.

Performance:

Adjustable luminous intensity for all flash rhythms: 10 to 130 candelas minimum peak intensity adjustability range for all colors.

Vertical Divergence: ± 3.5 degrees minimum to 50% peak intensity.

Power Consumption: In order to minimize the impact to the power system of existing USCG lighted aid installations during a lantern replacement, the maximum allowed power consumption values are listed below.

Power consumption at +12.0 VDC input, +20 to +25 deg C, and operating at a Fixed intensity of 100 candelas ± 2 cd:

White - 0.150 amps max Yellow - 0.200 amps max Red - 0.180 amps max Green - 0.150 amps max Quiescent current (all colors) - 10 ma maximum day and night

Sync Ability: The LED Lantern shall have the capability to be synchronized to the flash rhythm of a separate, external Coast Guard lantern via a timed +5 to +13 VDC pulse. Synchronization shall be provided by wire so that two or more LED lanterns (omnidirectional or range) can be synchronized together. If necessary, an optional sync module (installed inside the lantern) may be used to invert/convert the incoming sync pulse to establish sync compatibility between two lanterns from different manufacturers that have inverted sync protocols (i.e., trailing edge vs. leading edge sync triggers).

Data Sheet 2

Self-Contained LED Lantern (Short Range)

General: Self-Contained LED Lanterns submitted for consideration that meet or exceed the requirements in this Data Sheet along with all the requirements of Section 3 of this Specification will be considered except Section 3.8.

Features: • Self-contained LED lanterns include the light source, solar panels, battery(s), and control system as an integrated package.

• Fan beam.

• Lantern available in the following colors: white, red, green, and yellow.

Performance:

Adjustable luminous intensity for all flash rhythms: The minimum peak intensity for each color is shown below. The intensity must be adjustable by a minimum of 25% increment range for all colors.

White Green Red Yellow

25 25 20 15

Vertical Divergence: ± 3.5 degrees minimum to 50% peak intensity.

Solar Power System : The self-contained lantern shall be capable of operating year-round in Portland, ME with a 10% duty cycle flash rhythm (e.g., FL4(.4)) at a setting that will provide at least 25 candelas effective intensity (for Green and White), 20 candelas effective intensity for Red and 15 candelas effective intensity for yellow. Additionally, the battery shall have an autonomy of not less than 10 days; and, on a daily basis, the solar panels shall be capable of generating at least as much energy as will be consumed by the lantern with the small power system [i.e. Ein (energy in) shall be equal to or greater than Eout (energy out)].

Batteries: Battery or battery packs/kits for the self-contained lanterns described above shall be available on contract as separate contract line items (CLINs). The batteries or battery packs shall be configured and shipped as kits containing all additional hardware items and instructions required for a successful battery replacement procedure, items such as replacement O-rings, tie-down straps, fasteners, connectors, etc., whatever is required by the lantern’s design.

Storage: The Self-Contained LED lantern shall be capable of being placed in “sleep mode” to prevent operation while in transit or storage.

Bird Deterrent: The Self-Contained LED Lantern shall have a minimum of one spike for bird deterrent.

Programming: The Self-Contained LED Lantern shall be able to be programmed by either switches or by IR. If IR, a LED display is required to confirm program setting.

For autonomy and energy calculations, see the next page.

Autonomy and Energy Calculations (for Self-Contained LED lanterns)

Daily energy consumption shall be calculated as follows:

Eout = HoursDarkness x Duty Cycle x ILamp + 24 hours x Q where: Eout is the lantern’s daily energy consumption in Amp-hours.

HoursDarkness is hours of darkness. For Portland, ME, set HoursDarkness = 15.25 hours.

Duty Cycle is the duty cycle of the light characteristic.

ILamp is the lantern’s current draw while the light is on. For a light that is pulsed, ILamp is the time-averaged current over the period of the flash. ILamp shall be calculated or measured for a lantern operating at the specified duty cycle and at an ambient (i.e.

external to the lantern) temperature of minus 10° C. The value used for ILamp shall be such that from a random selection of lanterns, 90% or more of the measured current values shall be less than ILamp at the specified duty cycle and ambient temperature.

Q is the quiescent current in amps.

Autonomy shall be calculated as follows:

Autonomy = (0.8 x Rated Battery Capacity) / Eout where: Autonomy is the lantern’s autonomy in days.

Rated Battery Capacity is the manufacturer’s rated battery capacity in Amp-hours at a temperature of -11° C (12° F).

Eout is the lantern’s daily energy consumption in Amp-hours, as calculated above.

Daily energy production calculations. The lantern’s daily energy production shall be calculated by summing the daily energy production from each of the lantern’s solar panels as follows:

where: Ein is the combined daily energy production of solar panels.

n is the number of solar panels.

H is the daily solar radiation on one of the panels in kWh/m² (see below for solar radiation values).

Hi * Wi VMPPi

* Eff n i=1

Ein =

W is the solar panel’s rated power at -11° C (12° F).

VMPP is the solar panel’s voltage at its max power point.

Eff is an efficiency factor. Set Eff = 0.80.

Solar radiation values. The solar radiation values presented here are average radiation values for Portland, ME, for the month of December. Use these radiation values to calculate the solar panels’ daily energy production:

● For 4 vertical solar panels spaced 90-degrees apart: H1 = 2.37, H2 = 2.21, H3 = 0.53, and H4 = 0.54 kWh/m²/day. These are average radiation for vertical surfaces facing 135°, 225°, 315°, and 045° respectively (000° being a north-facing solar panel and 090° an east-facing solar panel).

● For 3 vertical solar panels spaced 120-degrees apart: H1 = 3.02, H2 = 0.61, and H3 = 0.66 kWh/m²/day. These are average radiation for vertical surfaces facing 180°, 300°, and 060°

● For a horizontal solar panel, use H = 1.56 kWh/m²/day.

Data Sheet 3

Self-Contained LED Lantern (Medium Range)

General: Self-Contained LED Lanterns submitted for consideration that meet or exceed the requirements in this Data Sheet along with all the requirements of Section 3 of this Specification will be considered except Section 3.8.

Features: • Self-contained LED lanterns include the light source, solar panels, battery(s), and control system as an integrated package.

• Fan beam.

• Lantern available in the following colors: white, red, green, and yellow.

Performance:

Adjustable luminous intensity for all flash rhythms: The minimum peak intensity for each color is shown below. The intensity must be adjustable by a minimum of 25% increment range for all colors.

White Green Red Yellow

100 100 65 65

Vertical Divergence: ± 3.5 degrees minimum to 50% peak intensity.

Solar Power System: The self-contained lantern shall be capable of operating year-round in Portland, ME with a 10% duty cycle flash rhythm (e.g., FL4(.4)) at a setting that will provide at least 100 candelas (for White and Green) and 65 candelas (for Red and Yellow) effective intensity. Additionally, the battery shall have an autonomy of not less than 10 days; and, daily, the solar panels shall be capable of generating at least as much energy as will be consumed by the lantern with the small power system [i.e. Ein (energy in) shall be equal to or greater than Eout (energy out)].

Batteries: Battery or battery packs/kits for the self-contained lanterns described above shall be available on contract as separate contract line items (CLINs). The batteries or battery packs shall be configured and shipped as kits containing all additional hardware items and instructions required for a successful battery replacement procedure, items such as replacement O-rings, tie-down straps, fasteners, connectors, etc., whatever is required by the lantern’s design.

Storage: The Self-Contained LED lantern shall be capable of being placed in “sleep mode” to prevent operation while in transit or storage.

Bird Deterrent: The Self-Contained LED Lantern shall have a minimum of one spike for bird deterrent.

Programming: The Self-Contained LED Lantern shall be able to be programmed by either switches or by IR. If IR, a LED display is required to confirm program setting.

Eout = HoursDarkness x Duty Cycle x ILamp + 24 hours x Q

ILamp is the lantern’s current draw while the light is on. For a light that is pulsed, ILamp is the time-averaged current over the period of the flash. ILamp shall be calculated or measured for a lantern operating at the specified duty cycle and at an ambient (i.e.

external to the lantern) temperature of minus 10° C. The value used for ILamp shall be where: Ein is the combined daily energy production of the solar panels.

radiation values).

Hi * Wi VMPPi

* Eff n

Portland, ME, for the month of December. Use these radiation values to calculate the solar panels’ daily energy production:

● For 4 vertical solar panels spaced 90-degrees apart: H1 = 2.37, H2 = 2.21, H3 = 0.53, and H4 = 0.54

Data Sheet 4

Self-Contained LED Lantern (Long Range)

General: Self-Contained LED Lanterns submitted for consideration that meet or exceed the requirements in this Data Sheet along with all the requirements of Section 3 of this Specification will be considered.

Features: • Self-contained LED lanterns include the light source, solar panels, battery(s), control system, and Type 3 AIS (if applicable) as an integrated package.

• Fan beam.

• Lantern available in the following colors: white, red, green, and yellow.

• Integrated AIS version, Type 3, Message 21 broadcast capable (Optional).

Performance:

Adjustable luminous intensity for all flash rhythms: 10 to 130 candelas minimum peak intensity. The Self-contained Lantern must be adjustable by a minimum of 5% increments for all colors.

Vertical Divergence: ± 3.5 degrees minimum to 50% peak intensity.

Solar Power System (non-AIS): The self-contained lantern with the large power system shall be capable of operating year-round in Portland, ME with a 30% duty cycle (e.g., Q Flash rhythm) at a setting that will provide at least 100 candelas intensity (all signal colors).

Additionally, the battery shall have an autonomy of not less than 15 days; and, on a daily basis, the solar panels shall be capable of generating at least as much energy as will be consumed by the lantern with the large power system [i.e. Ein (energy in) shall be equal to or greater than Eout (energy out)].

AIS-ATON (AIS-capable) (Optional): The Self-Contained LED Lantern shall have the optional capability to be integrated Type 3 AIS broadcasting Message 21 shall be capable of operating year-round in Portland, ME with a 10% duty cycle (e.g., FL4(.4) Flash rhythm) at a setting that will provide at least 100 candelas intensity (all signal colors). Additionally, the battery shall have an autonomy of not less than 15 days; and, on a daily basis, the solar panels shall be capable of generating at least as much energy as will be consumed by the lantern with the integrated AIS [i.e. Ein (energy in) shall be equal to or greater than Eout (energy out)]. AIS programming shall be performed via on-board controls or hardwire communications. AIS programming capability via Infrared (IR) Remote Control shall be permanently disabled due to cyber-security concerns and potential unauthorized reprogramming after deployment.

Likewise, if the AIS lantern has integrated Bluetooth programming capability, its functionality shall be permanently disabled as well.

Batteries: Battery or battery packs/kits for self-contained lanterns described above shall be available on contract as separate contract line items (CLINs). The batteries or battery packs shall be configured and shipped as kits containing all additional hardware items and instructions required for a successful battery replacement procedure, items such as replacement O-rings, tie-down straps, fasteners, connectors, etc., whatever is required by the lantern’s design.

Storage: The Self-Contained LED lantern shall be capable of being placed in “sleep mode” to prevent operation while in transit or storage.

Programming: The Self-Contained LED Lantern shall be able to be programmed by either switches or by IR. If IR, a LED display is required to confirm program setting.

Sync Port (Optional): The Self-Contained LED Lantern shall have the optional capability to be synchronized to the flash rhythm of a separate, external Coast Guard LED lantern (omnidirectional or range) via a timed +5 to +13 VDC pulse via a hard-wire connection.

Therefore, an optional weather-proof sync port or terminal for synchronizing the flash rhythms of two or more LED lanterns, self-contained or standalone, shall be available. The vast majority of self-contained LED lanterns will be ordered and shipped without the optional sync port installed. However, when the hard-wire sync feature is required, an optional sync module (installed inside the lantern) may be used to invert/convert the incoming sync pulse to establish sync compatibility between two lanterns from different manufacturers that have inverted sync protocols (i.e., trailing edge vs. leading edge sync triggers), if necessary.

Charge Port (Optional): An optional weather-proof charge port for charging the battery(s) from an external power source (i.e., a power pack) shall be available. The vast majority of self-contained LED lanterns will be ordered and shipped without the optional charge port installed.

Eout = HoursDarkness x DutyCycle x ILamp + 24 hours x Q

ILamp is the lantern’s current draw while the light is on. For a light that is pulsed, ILamp is the time-averaged current over the period of the flash. ILamp shall be calculated or measured for a lantern operating at the specified duty cycle and at an ambient (i.e.

external to the lantern) temperature of minus 10° C. The value used for ILamp shall be where: Ein is the combined daily energy production of the solar panels.

radiation values).

Hi * Wi VMPPi

* Eff n

Portland, ME, for the month of December. Use these radiation values to calculate the solar panels’ daily energy production:

● For 4 vertical solar panels spaced 90-degrees apart: H1 = 2.37, H2 = 2.21, H3 = 0.53, and H4 = 0.54