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ECCN reference · Category 6: Sensors and lasers

ECCN 6A001

Acoustic systems, equipment and "components," as follows

Systems, equipment and components. Reasons for control: NS (National security), AT (Anti-terrorism).

Does 6A001 need a license to your country?

Enter the full classification (for example 6A001.a.1.a.1.a) and a destination. The check reads the Country Chart, the end-use and embargo rules, and shows the rule and source behind the answer.

License requirement check

Item classification and destination. No account needed.

An ECCN (such as 5A992.c) is an exact match and works best. Word search matches the official CCL wording and a reviewed list of everyday names as you write them; it does not guess what you mean or fix spelling. Don’t know the ECCN? Use Find the ECCN.

License requirements

Each control below comes from the entry’s License Requirements table. Where it names a Country Chart column, the countries with an X in that column need a license for the items the control covers, unless a License Exception applies.

  • NS (National security): NS applies to entire entry.
    Country Chart column NS2: a license is needed to 156 countries with an X

    Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Armenia, Aruba, Azerbaijan, Bahamas, The, Bahrain, Bangladesh, Barbados, Belarus, Belize, Benin, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Brunei, Burkina Faso, Burma, Burundi, Cambodia, Cameroon, Cape Verde, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo (Democratic Republic of the), Congo (Republic of the), Costa Rica, Cote d'Ivoire, Curaçao, Cyprus, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Eswatini, Ethiopia, Fiji, Gabon, Gambia, The, Georgia, Ghana, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Indonesia, Iraq, Israel, Jamaica, Jordan, Kazakhstan, Kenya, Kiribati, Kosovo, Kuwait, Kyrgyzstan, Laos, Lebanon, Lesotho, Liberia, Libya, Macau, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Micronesia (Federated State of), Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Namibia, Nauru, Nepal, Nicaragua, Niger, Nigeria, North Macedonia, Oman, Pakistan, Palau, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Qatar, Russia, Rwanda, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Sint Maarten (the Dutch two-fifths of the island of Saint Martin), Solomon Islands, Somalia, South Sudan, Republic of, Sri Lanka, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Sudan, Suriname, Taiwan, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, Uruguay, Uzbekistan, Vanuatu, Vatican City, Venezuela, Vietnam, Western Sahara, Yemen, Zambia, Zimbabwe.

  • AT (Anti-terrorism): AT applies to entire entry. No Country Chart country has an X in column AT1; the destinations this control targets are under “Not decided by the Country Chart” below.

Not decided by the Country Chart: Covered Donetsk region of Ukraine (DNR), Covered Luhansk region of Ukraine (LNR), Crimea region of Ukraine, Cuba, Iran, Korea, North, Syria. These destinations are under embargoes or other special controls in 15 CFR Part 746, which require a license for most items whatever the chart shows. Russia and Belarus also have broad Part 746 controls in addition to the chart.

A blank on the Country Chart is not permission to ship. End-use and end-user rules (15 CFR Part 744), embargoes and sanctions (Part 746), and the parties to the transaction still apply. Use the check above for your item and country.

List-based License Exceptions

As the entry lists them. Each exception has its own conditions in 15 CFR Part 740, and § 740.2 bars or limits most of them for Russia, Belarus, Country Group D:5 and embargoed destinations, so an entry’s “Yes” does not mean it is available everywhere.

  • LVS: $3000; N/A for 6A001.a.1.b.1 object detection and location systems having a transmitting frequency below 5 kHz or a sound pressure level exceeding 210 dB (reference 1 µPa at 1 m) for equipment with an operating frequency in the band from 2 kHz to 30 kHz inclusive; 6A001.a.1.e, 6A001.a.2.a.1, a.2.a.2, 6A001.a.2.a.3, a.2.a.5, a.2.a.6, 6A001.a.2.b; processing equipment controlled by 6A001.a.2.c, and "specially designed" for real-time application with towed acoustic hydrophone arrays; a.2.e.1, a.2.e.2; and bottom or bay cable systems controlled by 6A001.a.2.f and having processing equipment "specially designed" for real-time application with bottom or bay cable systems.
  • GBS: Yes for 6A001.a.1.b.4.
  • Special Conditions for STA
  • STA: License Exception STA may not be used to ship commodities in 6A001.a.1.b, 6A001.a.1.e or 6A001.a.2 (except .a.2.a.4) to any of the destinations listed in Country Group A:6 (See Supplement No.1 to part 740 of the EAR).

Items in 6A001

The controls often apply to some paragraphs only, so check the full paragraph, for example 6A001.a.

Show all 91 paragraphs
  • 6A001.a Marine acoustic systems, equipment and "specially designed" "components" therefor, as follows:
  • 6A001.a.1 Active (transmitting or transmitting-and-receiving) systems, equipment and "specially designed" "components" therefor, as follows:
  • 6A001.a.1.a Acoustic seabed survey equipment as follows:
  • 6A001.a.1.a.1 Surface vessel survey equipment designed for sea bed topographic mapping and having all of the following:
  • 6A001.a.1.a.1.a Designed to take measurements at an angle exceeding 20° from the vertical;
  • 6A001.a.1.a.1.b Designed to measure seabed topography at seabed depths exceeding 600 m;
  • 6A001.a.1.a.1.d 'Enhancement' of the depth "accuracy" through compensation for all the following:
  • 6A001.a.1.a.1.d.1 Motion of the acoustic sensor;
  • 6A001.a.1.a.1.d.2 In-water propagation from sensor to the seabed and back; and
  • 6A001.a.1.a.1.d.3 Sound speed at the sensor;
  • 6A001.a.1.a.2 Underwater survey equipment designed for seabed topographic mapping and having any of the following:
  • 6A001.a.1.a.2.a Having all of the following:
  • 6A001.a.1.a.2.a.1 Designed or modified to operate at depths exceeding 300 m; and
  • 6A001.a.1.a.2.a.2 'Sounding rate' greater than 3,800 m/s; or
  • 6A001.a.1.a.2.b Survey equipment, not specified by 6A001.a.1.a.2.a, having all of the following:
  • 6A001.a.1.a.2.b.1 Designed or modified to operate at depths exceeding 100 m;
  • 6A001.a.1.a.2.b.2 Designed to take measurements at an angle exceeding 20° from the vertical;
  • 6A001.a.1.a.2.b.3 Having any of the following:
  • 6A001.a.1.a.2.b.3.a Operating frequency below 350 kHz; or
  • 6A001.a.1.a.2.b.3.b Designed to measure seabed topography at a range exceeding 200 m from the acoustic sensor; and
  • 6A001.a.1.a.2.b.4 'Enhancement' of the depth "accuracy" through compensation of all of the following:
  • 6A001.a.1.a.2.b.4.a Motion of the acoustic sensor;
  • 6A001.a.1.a.2.b.4.b In-water propagation from sensor to the seabed and back; and
  • 6A001.a.1.a.2.b.4.c Sound speed at the sensor.
  • 6A001.a.1.a.3 Side Scan Sonar (SSS) or Synthetic Aperture Sonar (SAS), designed for seabed imaging and having all of the following, and "specially designed" transmitting and receiving acoustic arrays therefor:
  • 6A001.a.1.a.3.a Designed or modified to operate at depths exceeding 500 m; and
  • 6A001.a.1.a.3.b An 'area coverage rate' of greater than 570 m^2/s while operating at the maximum range that it can operate with an 'along track resolution' of less than 15 cm; and
  • 6A001.a.1.a.3.c An 'across track resolution' of less than 15 cm;
  • 6A001.a.1.b Systems or transmitting and receiving arrays, designed for object detection or location, having any of the following:
  • 6A001.a.1.b.1 A transmitting frequency below 10 kHz;
  • 6A001.a.1.b.2 Sound pressure level exceeding 224dB (reference 1 µPa at 1 m) for equipment with an operating frequency in the band from 10 kHz to 24 kHz inclusive;
  • 6A001.a.1.b.3 Sound pressure level exceeding 235 dB (reference 1 µPa at 1 m) for equipment with an operating frequency in the band between 24 kHz and 30 kHz;
  • 6A001.a.1.b.4 Forming beams of less than 1° on any axis and having an operating frequency of less than 100 kHz;
  • 6A001.a.1.b.5 Designed to operate with an unambiguous display range exceeding 5,120 m; or
  • 6A001.a.1.b.6 Designed to withstand pressure during normal operation at depths exceeding 1,000 m and having transducers with any of the following:
  • 6A001.a.1.b.6.a Dynamic compensation for pressure; or
  • 6A001.a.1.b.6.b Incorporating other than lead zirconate titanate as the transduction element;
  • 6A001.a.1.c Acoustic projectors, including transducers, incorporating piezoelectric, magnetostrictive, electrostrictive, electrodynamic or hydraulic elements operating individually or in a designed combination and having any of the following:
  • 6A001.a.1.c.1 Operating at frequencies below 10 kHz and having any of the following:
  • 6A001.a.1.c.1.a Not designed for continuous operation at 100% duty cycle and having a radiated 'free-field Source Level (SLRMS)' exceeding (10log(f) + 169.77)dB (reference 1 µPa at 1 m) where f is the frequency in Hertz of maximum Transmitting Voltage Response (TVR) below 10 kHz; or
  • 6A001.a.1.c.1.b Designed for continuous operation at 100% duty cycle and having a continuously radiated 'free-field Source Level (SLRMS)' at 100% duty cycle exceeding (10log(f) + 159.77)dB (reference 1 µPa at 1 m) where f is the frequency in Hertz of maximum Transmitting Voltage Response (TVR) below 10 kHz; or
  • 6A001.a.1.c.3 Side-lobe suppression exceeding 22 dB;
  • 6A001.a.1.d Acoustic systems and equipment, designed to determine the position of surface vessels or underwater vehicles and having all of the following, and "specially designed" "components" therefor:
  • 6A001.a.1.d.1 Detection range exceeding 1,000 m; and
  • 6A001.a.1.d.2 Determined position error of less than 10 m rms (root mean square) when measured at a range of 1,000 m;
  • 6A001.a.1.e Active individual sonars, "specially designed" or modified to detect, locate and automatically classify swimmers or divers, having all of the following, and "specially designed" transmitting and receiving acoustic arrays therefor:
  • 6A001.a.1.e.1 Detection range exceeding 530 m;
  • 6A001.a.1.e.2 Determined position error of less than 15 m rms (root mean square) when measured at a range of 530 m; and
  • 6A001.a.1.e.3 Transmitted pulse signal bandwidth exceeding 3 kHz;
  • 6A001.a.2 Passive systems, equipment and "specially designed" "components" therefor, as follows:
  • 6A001.a.2.a Hydrophones having any of the following:
  • 6A001.a.2.a.1 Incorporating continuous flexible sensing elements;
  • 6A001.a.2.a.2 Incorporating flexible assemblies of discrete sensing elements with either a diameter or length less than 20 mm and with a separation between elements of less than 20 mm;
  • 6A001.a.2.a.3 Having any of the following sensing elements:
  • 6A001.a.2.a.3.a Optical fibers;
  • 6A001.a.2.a.3.b 'Piezoelectric polymer films' other than polyvinylidene-fluoride (PVDF) and its co-polymers {P(VDF-TrFE) and P(VDF-TFE)};
  • 6A001.a.2.a.3.c 'Flexible piezoelectric composites';
  • 6A001.a.2.a.3.d Lead-magnesium- niobate/lead-titanate (i.e., Pb(Mg_(1/3)Nb_(2/3))O_3-PbTiO_(3,) or PMN-PT) piezoelectric single crystals grown from solid solution; or
  • 6A001.a.2.a.3.e Lead-indium-niobate/lead-magnesium niobate/lead-titanate (i.e., Pb(In_(1/2)Nb_(1/2))O_3-Pb(Mg_(1/3)Nb_(2/3))O_3-PbTiO_3, or PIN-PMN-PT) piezoelectric single crystals grown from solid solution;
  • 6A001.a.2.a.4 A 'hydrophone sensitivity' better than −180dB at any depth with no acceleration compensation;
  • 6A001.a.2.a.5 Designed to operate at depths exceeding 35 m with acceleration compensation; or
  • 6A001.a.2.a.6 Designed for operation at depths exceeding 1,000 m and having a 'hydrophone sensitivity' better than −230 dB below 4 kHz;
  • 6A001.a.2.b Towed acoustic hydrophone arrays having any of the following:
  • 6A001.a.2.b.1 Hydrophone group spacing of less than 12.5 m or 'able to be modified' to have hydrophone group spacing of less than 12.5 m;
  • 6A001.a.2.b.2 Designed or 'able to be modified' to operate at depths exceeding 35m;
  • 6A001.a.2.b.3 Heading sensors controlled by 6A001.a.2.d;
  • 6A001.a.2.b.4 Longitudinally reinforced array hoses;
  • 6A001.a.2.b.5 An assembled array of less than 40 mm in diameter;
  • 6A001.a.2.b.7 Hydrophone characteristics controlled by 6A001.a.2.a; or
  • 6A001.a.2.b.8 Accelerometer-based hydro-acoustic sensors specified by 6A001.a.2.g;
  • 6A001.a.2.c Processing equipment, "specially designed" for towed acoustic hydrophone arrays, having "user-accessible programmability" and time or frequency domain processing and correlation, including spectral analysis, digital filtering and beamforming using Fast Fourier or other transforms or processes;
  • 6A001.a.2.d Heading sensors having all of the following:
  • 6A001.a.2.d.1 An "accuracy" of better than ± 0.5°; and
  • 6A001.a.2.d.2 Designed to operate at depths exceeding 35 m or having an adjustable or removable depth sensing device in order to operate at depths exceeding 35 m;
  • 6A001.a.2.e Bottom or bay-cable hydrophone arrays having any of the following:
  • 6A001.a.2.e.1 Incorporating hydrophones controlled by 6A001.a.2.a;
  • 6A001.a.2.e.2 Incorporating multiplexed hydrophone group signal modules having all of the following characteristics:
  • 6A001.a.2.e.2.a Designed to operate at depths exceeding 35 m or having an adjustable or removal depth sensing device in order to operate at depths exceeding 35 m; and
  • 6A001.a.2.e.2.b Capable of being operationally interchanged with towed acoustic hydrophone array modules; or
  • 6A001.a.2.e.3 Incorporating accelerometer-based hydro-acoustic sensors specified by 6A001.a.2.g;
  • 6A001.a.2.f Processing equipment, "specially designed" for bottom or bay cable systems, having "user-accessible programmability" and time or frequency domain processing and correlation, including spectral analysis, digital filtering and beamforming using Fast Fourier or other transforms or processes;
  • 6A001.a.2.g Accelerometer-based hydro-acoustic sensors having all of the following:
  • 6A001.a.2.g.1 Composed of three accelerometers arranged along three distinct axes;
  • 6A001.a.2.g.2 Having an overall 'acceleration sensitivity' better than 48 dB (reference 1,000 mV rms per 1g);
  • 6A001.a.2.g.3 Designed to operate at depths greater than 35 meters; and
  • 6A001.a.2.g.4 Operating frequency below 20 kHz;
  • 6A001.b Correlation-velocity and Doppler-velocity sonar log equipment designed to measure the horizontal speed of the equipment carrier relative to the sea bed, as follows:
  • 6A001.b.1 Correlation-velocity sonar log equipment having any of the following characteristics:
  • 6A001.b.1.a Designed to operate at distances between the carrier and the sea bed exceeding 500 m; or
  • 6A001.b.1.b Having speed "accuracy" better than 1% of speed;
  • 6A001.b.2 Doppler-velocity sonar log equipment having speed "accuracy" better than 1% of speed;

Source

Commerce Control List, 15 CFR Part 774, Supplement No. 1 (official text on eCFR), as of August 21, 2026, 1:45AM EDT. Commerce Country Chart, Supplement No. 1 to Part 738, as of August 21, 2026, 1:45AM EDT.

This page is a preliminary reference, not legal advice, a classification ruling or permission to ship. Confirm the classification against the full official text.