Circular 30/2026/TT-BKHCN list, licensing of dual-use goods, monitoring strategic trade control

THE MINISTER




Vu Hai Quan

No.

HS Code

Goods Description

Technical, Technological Characteristics

Ref. ECCN Code

I

Radioactive materials and nuclear equipment

1.

Radioactive materials

1.1

Uranium or thorium ores and concentrates

1.1.1

2612.10.00

Uranium ores and concentrates

Natural uranium, depleted uranium or thorium in the form of metal, alloy, chemical compound or concentrate and any other material containing one or more of the foregoing

0C001

1.1.2

2612.20.00

Thorium ores and concentrates

Natural uranium, depleted uranium or thorium in the form of metal, alloy, chemical compound or concentrate and any other material containing one or more of the foregoing

0C001

1.2

Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products

1.2.1

Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds:

1.2.1.1

2844.10.10

Natural uranium and its compounds

Natural uranium, depleted uranium or thorium in the form of metal, alloy, chemical compound or concentrate and any other material containing one or more of the foregoing

0C001

1.2.1.2

2844.10.90

Other

Natural uranium, depleted uranium or thorium in the form of metal, alloy, chemical compound or concentrate and any other material containing one or more of the foregoing

0C001

1.2.2

Uranium enriched in U-235 and its compounds; plutonium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U-235, plutonium or compounds of these products:

1.2.2.1

2844.20.10

Uranium enriched in U-235 and its compounds; plutonium and its compounds

Special fissile materials

0C002

1.2.2.2

2844.20.90

Other

Special fissile materials

0C002

1.2.3

Uranium depleted in U-235 and its compounds; thorium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium depleted in U-235, thorium or compounds of these products:

1.2.3.1

2844.30.10

Uranium depleted in U-235 and its compounds; thorium and its compounds

Natural uranium, depleted uranium or thorium in the form of metal, alloy, chemical compound or concentrate and any other material containing one or more of the foregoing

0C001

1.2.3.2

2844.30.90

Other

Natural uranium, depleted uranium or thorium in the form of metal, alloy, chemical compound or concentrate and any other material containing one or more of the foregoing

0C001

1.2.4

Radioactive elements and isotopes and compounds other than those of subheading 2844.10, 2844.20 or 2844.30; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues:

1.2.4.1

2844.41.00

Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds

Tritium, tritium compounds, mixtures containing tritium in which the ratio of tritium to hydrogen atoms exceeds 1 part in 1000, and products or devices containing any of the foregoing.

Note:

Control if the activity exceeds 1.48 x 10³ GBq (40 Ci)

1C235

1.2.4.2

2844.42.00

Actinium-225, actinium-227, californium-253, curium-240, curium-241, curium-242, curium-243, curium-244, einsteinium-253, einsteinium-254, gadolinium-148, polonium-208, polonium-209, polonium-210, radium-223, uranium-230 or uranium-232, and their compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements or compounds

Radionuclides appropriate for making neutron sources based on alpha-n reaction, in the following forms:

a. Elemental;

b. Compounds having a total activity of 37 GBq/kg (1 Ci/kg) or greater;

c. Mixtures having a total activity of 37 GBq/kg (1 Ci/kg) or greater;

d. Products or devices containing any of the foregoing.

Note:

Does not control a product or device containing less than 3.7 GBq (100 mCi) of activity.

1C236

1.2.4.3

2844.43.00

Other radioactive elements, isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds

Other radioactive elements, isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds

1C237

1C012.b

1.2.4.4

2844.50.00

Spent (irradiated) fuel elements (cartridges) of nuclear reactors

Spent (irradiated) fuel elements (cartridges) of nuclear reactors

0A001.c

2

Nuclear equipment

2.1

Nuclear reactors and associated equipment

2.1.1

8401.10.00

Nuclear reactors

Nuclear reactors

0A001.a

2.1.2

8401.40.00

Parts of nuclear reactors

Including: Reactor vessels, control rods, fuel charging and discharging machines, pressure tubes, zirconium tubes, primary coolant pumps

0A001.b

0A001.d

0A001.c

0A001.e

0A001.f

0A001.g

2.1.3

8401.30.00

Unirradiated nuclear fuel elements (cartridges)

Unirradiated nuclear fuel elements (cartridges)

0C002

2.2

Uranium conversion and enrichment equipment

2.2.1

8401.20.00

Machinery and apparatus for isotopic separation, and parts thereof

Including: Gas centrifuges; specially designed or prepared components for gas centrifuges; principal equipment and components used for enrichment; Systems, equipment, and specially designed or prepared components for use in enrichment plants based on chemical exchange or ion exchange, laser technology, plasma separation, or electromagnetic separation

0B001.a.1

0B001.b.1

0B001.a.3

0B001.a.4

0B001.a.5

0B001.a.6

0B001.a.7

0B001.a.8

0B001.a.9

0B001.b.1

0B001.b.10

0B001.b.11

0B001.b.12

0B001.b.13

2.2.2

8414.80

8417.10

8419.40

Systems specially designed or prepared for the conversion of uranium ore concentrates to UO3

Uranium conversion equipment and equipment specially designed or prepared for the conversion of uranium ore concentrates to UO3

0B003.a

2.2.3

8414.80

8417.10

8419.40

Systems specially designed or prepared for the conversion of UO3 to UF6

Uranium conversion equipment and equipment specially designed or prepared for the conversion of UO3 to UF6

0B003.b

2.2.4

8414.80

8417.10

8419.40

Systems specially designed or prepared for the conversion of UO3 to UO2

Uranium conversion equipment and equipment specially designed or prepared for the conversion of UO3 to UO2

0B003.c

2.2.5

8414.80

8417.10

8419.40

Systems specially designed or prepared for the conversion of

UO2 to UF4

Uranium conversion equipment and equipment specially designed or prepared for the conversion of UO2 to UF4

0B003.d

2.2.6

8414.80

8417.10

8419.40

Systems specially designed or prepared for the conversion of

UF4 to UF6

Uranium conversion equipment and equipment specially designed or prepared for the conversion of UF4 to UF6

0B003.e

2.2.7

8414.80

8417.10

8419.40

Systems specially designed or prepared for the conversion of UF4 to uranium metal

Uranium conversion equipment and equipment specially designed or prepared for the conversion of UF4 to uranium metal

0B003.f

2.2.8

8414.80

8417.10

8419.40

Systems specially designed or prepared for the conversion of UF6 to UO2

Uranium conversion equipment and equipment specially designed or prepared for the conversion of UF6 to UO2

0B003.g

2.2.9

8414.80

8417.10

8419.40

Systems specially designed or prepared for the conversion of UF6 to UF4

Uranium conversion equipment and equipment specially designed or prepared for the conversion of UF6 to UF4

0B003.h

2.3

Reprocessing equipment for irradiated nuclear fuel

2.3.1

7310.29

8421.29

8465.91

8465.96

8479.89

Reprocessing equipment for irradiated nuclear fuel

Equipment for the reprocessing of irradiated fuel elements, and equipment and components specially designed or prepared therefor

0B006

2.4

Fabrication equipment for nuclear fuel

2.4.1

8207.30

8479.89

8514.40

8515.31

9027.89

Fabrication equipment for nuclear fuel

Equipment which comes into direct contact with or directly processes or directly controls the flow of nuclear material in production

0B005

II

Electronics

1

8542.31.00

8542.39.00

Processing microcircuits (microprocessor microcircuits, microcomputer microcircuits, and microcontroller microcircuits) having a processing speed of 5 GFLOPS or more and an arithmetic logic unit (ALU) with an access width of 32 bits or more.

Integrated circuits containing one or more electronic processing units having a “Total Processing Performance (TPP)” exceeding 6000.

Note:

1. "Total Processing Performance (TPP)" is the sum of all electronic processing units on the integrated circuit, equal to 2 x MacTOPS x word length of the operation (in bits).

a. "MacTOPS" is the theoretical maximum number of Tera (10¹²) multiply-accumulate operations (D=AxB+C) the device can perform per second.

b. The number 2 in the formula is based on industry convention regarding treating 1 multiply-accumulate operation D=AxB+C as 2 separate operations for reporting on datasheets. Therefore, 2 x MacTOPS may be equivalent to TOPS or FLOPS on a specification sheet.

Word length of the operation (in bits) is the maximum bit length of the operand in the multiplication operation.

Calculate the 'TPP' for each processing unit on the integrated circuit to arrive at the total. 'TPP' = TPP1 + TPP2 + .... + TPPn (where n is the number of processing units on the integrated circuit).

The rate of 'MacTOPS' is to be calculated at its theoretical maximum value. The rate of 'MacTOPS' is considered the highest value claimed by the manufacturer in a manual or brochure for the integrated circuit. For example: the threshold of 6,000 'TPP' can be met with 750 tera FLOPS (or 2 x 375 'MacTOPS') of integer operations at 8 bits or 300 tera FLOPS (or 2 x 150 'MacTOPS') at 16 bits. If the electronic processing unit is designed to compute MACs at multiple bit lengths achieving different 'TPP' values, the highest TPP value is used.

3A501.a.16

2

8542.31.00

8542.39.00

Integrated circuits designed or rated as radiation-hardened.

Integrated circuits designed or rated as radiation-hardened to withstand any of the following:

a. A Total Ionizing Dose (TID) of 5 x 10³ Gy (silicon) or higher;

b. A dose rate upset of 5 x 10⁶ Gy (silicon)/s or higher; or

c. A neutron fluence density (1 MeV equivalent) of 5 x 10¹³ n/cm² or higher on silicon, or equivalent for other materials.

Note: 3A001.a.1.c does not control Metal Insulator Semiconductors (MIS).

3A001.a.1

3

2849.20.00

2850.00.00

3818.00.00

Semiconductor substrates or other preforms

High resistivity materials as follows: Semiconductor substrates of silicon carbide (SiC), gallium nitride (GaN), aluminum nitride (AlN), aluminum gallium nitride (AlGaN), gallium oxide (Ga₂O₃), or diamond, or other preforms of such materials, having an electrical resistivity greater than 10,000 ohm-cm at 20°C.

3C005.a

4

3818.00.00

8541.90.00

Polycrystalline substrates or polycrystalline ceramic substrates

High resistivity materials as follows: Polycrystalline substrates or polycrystalline ceramic substrates, having an electrical resistivity greater than 10,000 ohm-cm at 20°C and having at least one non-epitaxial single crystal layer of silicon (Si), silicon carbide (SiC), gallium nitride (GaN), aluminum nitride (AlN), aluminum gallium nitride (AlGaN), gallium oxide (Ga₂O₃), or diamond on the surface of the substrate.

3C005.b

5

3707.10.00

3904.90

Positive resists

Positive resists designed for semiconductor lithography, specially adjusted (optimized) for use at wavelengths between 193 nm and 15 nm.

3C002.a.1

III

Computers

1

8471.30

8471.41

8471.49

8471.50

8471.90

Electronic computers with an extended operating temperature range

Electronic computers rated for operation at an ambient temperature below -45°C or above 85°C.

Note: 4A001.a.1 does not apply to computers specially designed for civil automobile, railway train, or "civil aircraft" applications.

4A001.a.1

2

8471.30

8471.41

8471.49

8471.50

8471.90

Electronic computers designed to withstand high radiation levels

Specially designed electronic computers, radiation hardened to exceed any of the following specifications:

a. A Total Ionizing Dose (TID) of 5 x 10³ Gy (silicon) or higher;

b. A dose rate upset of 5 x 10⁶ Gy (silicon)/s or higher; or

c. A Single Event Upset (SEU) of 1x10^-8 errors/bit/day.

Note:

4A001.a.2 does not apply to computers specially designed for "civil aircraft" applications.

4A001.a.2

3

8471.30

8471.41

8471.49

8471.50

8471.90

Computers designed for modeling, simulation, or design integration of missiles

Computers specially designed for modeling, simulation, or design integration of space launch vehicles specified in 9A004 or sounding rockets specified in 9A104.

Note: This item only applies when the equipment is supplied with "software" specified in 7D103 or 9D103.

4A102

IV

Telecommunications, Sensors and Lasers

1

8517.61.00

8517.62

8517.69.00

Telecommunications equipment

Telecommunications systems and equipment, specially designed to withstand any of the following characteristics:

- Transitory electronic effects (or electromagnetic pulse effects);

- Specially hardened to withstand gamma, neutron or ion radiation;

- Operating outside the temperature range from -55°C to 124°C.

5A001.a

2

8517.61.00

8517.62

8517.69.00

8517.71.00

8517.79

Mobile telecommunications interception or jamming equipment

Mobile telecommunications interception or jamming equipment, and monitoring equipment therefor, and specially designed components, as follows:

- Interception equipment designed for the extraction of voice or data, transmitted over the air interface;

- Interception equipment not specified in 5A001.f.1., designed for the extraction of client device or subscriber identifiers (e.g., IMSI, TIMSI or IMEI), signaling, or other metadata transmitted over the air interface;

- Jamming equipment specially designed or modified to intentionally and selectively interfere with, deny, inhibit, degrade or seduce mobile telecommunication services and performing any of the following:

a. Simulate the functions of Radio Access Network (RAN) equipment;

b. Detect and exploit specific characteristics of the mobile telecommunications protocol employed (e.g., GSM); or

c. Exploit specific characteristics of the mobile telecommunications protocol employed (e.g., GSM);

- Radio Frequency (RF) monitoring equipment designed or modified to identify the operation of items specified in 5A001.f.1., 5A001.f.2. or 5A001.f.3.

5A001.f

3

8517.71.00

8517.79

8526.10

8526.91

8526.92.00

8529.10

8529.90

Telemetry and telecontrol equipment

Telemetry and telecontrol equipment, including ground equipment, designed or modified for unmanned aerial vehicles (UAVs).

Note:

(1) In 5A101, 'missiles' means complete rocket systems and unmanned aerial vehicle systems capable of a range exceeding 300 km.

(2) 5A101 does not control:

(a) Equipment designed or modified for manned aircraft or satellites;

(b) Ground equipment designed or modified for terrestrial or marine applications;

(c) Equipment designed for commercial, civil or 'Safety of Life' (e.g., data integrity, flight safety) GNSS services.

5A101

4

"Magnetometers", "magnetic gradiometers", underwater electric field sensors, underwater electromagnetic receivers incorporating magnetic field sensors

Note: 6A006 does not control instruments specially designed for fishery applications or biomagnetic measurements for medical diagnostics.

4.1

9015.80

"Magnetometers"

a) Magnetometers" using "superconductive" (SQUID) technology having any of the following characteristics:

SQUID systems designed for stationary operation, without subsystems specially designed to reduce in-motion noise, and having a 'sensitivity' equal to or lower (better) than 50 fT (rms) per √Hz at a frequency of 1 Hz; or

SQUID systems having an in-motion-magnetometer 'sensitivity' lower (better) than 20 pT (rms) per √Hz at a frequency of 1 Hz and specially designed to reduce in-motion noise;

b) Optically pumped or nuclear precession (proton/Overhauser) "magnetometers" having a 'sensitivity' lower (better) than 20 pT (rms) per √Hz at a frequency of 1 Hz;

c) Fluxgate "magnetometers" having a 'sensitivity' equal to or lower (better) than 10 pT (rms) per √Hz at a frequency of 1 Hz;

d) Induction coil "magnetometers" having a 'sensitivity' lower (better) than any of the following:

- 0.05 nT (rms) per √Hz at frequencies of less than 1 Hz;

- 1x10^-3 nT (rms) per √Hz at frequencies of 1 Hz or more but not exceeding 10 Hz; or

- 1x10^-4 nT (rms) per √Hz at frequencies exceeding 10 Hz;

- Fiber optic "magnetometers" having a 'sensitivity' lower (better) than 1 nT (rms) per √Hz

6A006.a

4.2

9015.80

Underwater electric field sensors

Underwater electric field sensors having a 'sensitivity' lower (better) than 8 nanovolt per meter per √Hz when measured at 1 Hz.

6A006.b

4.3

9015.80

"Magnetic gradiometers"

- "Magnetic gradiometers" using multiple "magnetometers" specified in 6A006.a;

- Fiber optic "magnetic gradiometers" having a magnetic gradient 'sensitivity' lower (better) than 0.3 nT/m (rms) per √Hz;

- "Magnetic gradiometers", using "technology" other than fiber-optic "technology", having a magnetic gradient 'sensitivity' lower (better) than 0.015 nT/m (rms) per √Hz

6A006.c

4.4

9015.80

9015.90.00

9030.89

"Compensation systems"

"Compensation systems" for magnetic sensors, magnetic gradiometers, or underwater electric field sensors, designed to meet or exceed the performance parameters specified in 6A006.a, 6A006.b or 6A006.c;

6A006.d

4.5

9015.80

9015.90.00

9030.89

Underwater electromagnetic receivers incorporating magnetic field sensors

Underwater electromagnetic receivers incorporating magnetic field sensors specified in 6A006.a or underwater electric field sensors specified in 6A006.b.

6A006.e

5

High-precision gravimeters, gravity gradiometers

5.1

9015.80

9015.90.00

High-precision gravimeters, gravity gradiometers

a) Gravimeters designed or modified for ground use and having a static accuracy of less (better) than 10 μGal;

Note:

6A007.a. does not control ground gravimeters of the quartz element (Worden) type.

b. Gravimeters designed for mobile platforms, having all of the following characteristics:

- A static accuracy of less (better) than 0,7 mGal; and

- An in-service (operational) accuracy of less (better) than 0,7 mGal and having a time-to-steady-state registration of less than 2 minutes under any combination of attendant calibration compensations and motion effects.

c. Gravity gradiometers.

6A007

5.2

9015.80

Other gravimeters

Gravimeters other than those specified in 6A007.b., designed or modified for airborne or marine use, having a static or in-service (operational) accuracy of equal to or less (better) than 0.7 milligal (mGal), and having a time-to-steady-state registration of 2 minutes or less.

6A107.a

6

High-speed cameras

6.1

8525.81

Electronic streak cameras

Electronic streak cameras having a temporal resolution of less than 50 ns

6A003.a.3

6.2

8525.81

8525.89

9006.30.00

Streak cameras

Streak cameras with writing speeds greater than 0.5 mm/μs

6A203.a.1

6.3

8525.81

8525.89

9006.30.00

9006.59

Electronic streak cameras

Electronic streak cameras having the capability of achieving a temporal resolution of 50 ns or less

6A203.a.2

6.4

8525.81

Electronic framing cameras

Electronic framing cameras having a speed exceeding 1,000,000 frames/s

6A003.a.4

6.5

8525.81

8525.89

9006.30.00

Framing cameras

Framing cameras having a writing speed greater than 225,000 frames/s

6A203.b.1

6.6

8525.81

8525.89

9006.30.00

9006.59

Framing cameras

Framing cameras having the capability of achieving a frame shutter time of 50 ns or less

6A203.b.2

6.7

8525.81

Electronic cameras

Electronic cameras having all of the following characteristics:

a. An electronic shutter speed (gating capability) of less than 1 μs per full frame; and

b. A read out time allowing a framing rate of greater than 125 full frames per second

6A003.a.5

6.8

8525.81

8525.89

9006.30.00

9006.59

Solid-state or electron tube cameras

Solid-state or electron tube cameras having a fast image gating time (shutter time) of 50 ns or less

6A203.c.1

6.9

8529.90

8540.20.00

9006.91

Specially designed components for solid-state or electron tube cameras:

Solid-state imaging devices and image intensifiers having a fast image gating (shutter) time of 50 ns or less, specially designed for cameras specified in 6A203.c.1.

6A203.c.2

7

8525.82

9002.90

9006.30.00

Radiation-hardened television cameras

Radiation-hardened television cameras, or lenses therefor, specially designed or rated as radiation-hardened to withstand a total radiation dose greater than 50x10³ Gy(silicon) (5x10⁶ rad (silicon)) without operational degradation

6A203.d

8

8541.51.00

8541.59.00

9029.20

9031.49

Velocity interferometers for measuring velocities exceeding 1 km/s in time intervals of less than 10 microseconds.

Velocity interferometers for measuring velocities exceeding 1 km/s in time intervals of less than 10 microseconds (µs).

Note:

6A225 includes velocity interferometers such as:

- VISARs (Velocity Interferometer Systems for Any Reflector);

- DLIs (Doppler Laser Interferometers);

- PDV (Photonic Doppler Velocimeters), also referred to as Het-V (Heterodyne Velocimeters);

- Microwave velocity interferometers, including microwave-optical mixing velocity interferometers.

6A225

9

8541.60.00

9026.20

9026.90.00

Pressure gauges capable of measuring pressures greater than 10 GPa

Quartz pressure transducers for pressures greater than 10 GPa

6A226.b

10

Acoustic systems, equipment, marine or terrestrial, designed for the detection, localization or identification of underwater objects or features, or positioning of surface vessels or underwater vehicles:

Note:

(i) 6A001.a.1. does not control the following:

a. Depth meters operating vertically below the apparatus, excluding those functions measuring swath exceeding ±20°, and limited to measuring the depth of water, the distance of submerged or buried objects, or fish finding;

b. Acoustic beacons, including:

- Acoustic emergency beacons;

- Pingers specifically designed for re-positioning or returning to an underwater position.

(ii)Technical Note:

For the purposes of 6A001.a.1.a., 'enhancement' includes the ability by external means to compensate (for errors).

10.1

8543.70

9015.80

9030.39.00

Acoustic seabed survey systems

1. Surface vessel swath bathymetric survey systems designed for seabed topographic mapping, having all of the following characteristics:

a. Designed to take measurements at an angle exceeding 20° from the vertical;

b. Designed to measure seabed topography at depths exceeding 600 m;

c. Sounding resolution of less than 2; and

d. Depth accuracy enhancement by compensation for all of the following:

- Motion of the acoustic sensor;

- Water propagation from the sensor to the seabed and back;

- Sound speed at the sensor.

Note:

For 6A001.a.1.a.1.c., 'sounding resolution' is the swath width (in degrees) divided by the maximum number of soundings per swath.

6A001.a.1.a.1

10.2

8543.70

9015.80

9030.39.00

Acoustic seabed survey systems

2. Underwater seabed survey systems designed for seabed topographic mapping, having any of the following:

Note:

For the purposes of 6A001.a.1.a.2., the pressure rating of the acoustic transducer determines the depth rating.

a. Having all of the following:

1. Designed or modified to operate at depths exceeding 300 m;

2. A sounding rate greater than 3,800 m/s.

Note:

For the purposes of 6A001.a.1.a.2.a.2., 'sounding rate' is the product of the maximum operational speed (m/s) of the sensor and the maximum number of soundings per swath (assuming 100% coverage). For systems generating soundings in two directions (3D sonars), use the maximum sounding rate value of either direction.

b. Systems not specified by 6A001.a.1.a.2.a., having all of the following:

1. Designed or modified to operate at depths exceeding 100 m;

2. Designed to take measurements at an angle exceeding 20° from the vertical;

3. Having any of the following:

a. An operating frequency of less than 350 kHz; or

b. Designed for measuring seabed topography at a distance exceeding 200 m from the acoustic sensor; and

4. Depth accuracy enhancement by compensation for all of the following:

a. Motion of the acoustic sensor;

b. Water propagation from the sensor to the seabed and back;

c. Sound speed at the sensor

6A001.a.1.a.2

10.3

8543.70

9015.80

9030.39.00

Acoustic seabed survey systems

3. Side Scan Sonars (SSS) or Synthetic Aperture Sonars (SAS), designed for seabed imaging, having all of the following, and specially designed transmitting and receiving acoustic arrays therefor:

a. Designed or modified to operate at depths exceeding 500 m;

b. An area coverage rate of greater than 570 m²/s when operating at the maximum range that it can operate with an along track resolution of less than 15 cm; and

c. An across track resolution of less than 15 cm

Note:

For the purposes of 6A001.a.1.a.3.:

1. Area coverage rate (m²/s) is twice the product of the sonar range (m) and the maximum sensor operational speed (m/s) at that range;

2. Along track resolution (cm), for SSS only, is the product of horizontal beam width (degrees), sonar range (m) and 0.873;

3. Across track resolution (cm) is 75 divided by the signal bandwidth (kHz).

6A001.a.1.a.3

10.4

8543.70

9015.80

9030.39.00

Acoustic seabed survey systems

b. Systems or transmitting and receiving acoustic arrays, designed for object detection or location, having any of the following:

1. A transmitting frequency below 10 kHz;

2. Sound pressure level exceeding 224 dB (reference 1 μPa at 1 m) for equipment with an operating frequency in the band from 10 kHz to 24 kHz inclusive;

3. Sound pressure level exceeding 235 dB (reference 1 μPa at 1 m) for equipment with an operating frequency in the band from 24 kHz to 30 kHz;

4. Forming beams of less than 1° on any axis and having an operating frequency of less than 100 kHz;

5. Designed to operate with an unambiguous display range exceeding 5,120 m;

6. Designed to withstand pressure during normal operation at depths exceeding 1,000 m and having transducers with any of the following:

a. Dynamic compensation for pressure;

b. Incorporating other than lead zirconate titanate as the transduction element

6A001.a.1.b

10.5

8543.70

9015.80

9030.39.00

Acoustic seabed survey systems

d. Acoustic systems and equipment, designed to determine the position of surface vessels or underwater vehicles, having all of the following, and specially designed components therefor:

1. Detection range exceeding 1,000 m; and

2. Determined position error of less than 10 m rms (root mean square) when measured at a range of 1,000 m;

Note:

6A001.a.1.d. includes:

a. Equipment using coherent "signal processing" between two or more beacons and the hydrophone unit carried by the surface vessel or underwater vehicle;

b. Equipment capable of automatically correcting speed-of-sound propagation errors for calculation of a point.

6A001.a.1.d

10.6

8543.70

9015.80

9030.39.00

Acoustic seabed survey systems

e. Individual active sonar systems, specially designed or modified for the detection, location and automatic classification of swimmers or divers, having all of the following, and specially designed acoustic transducer arrays therefor:

1. Detection range exceeding 530 m; and

2. Determined position error of less than 15 m rms (root mean square) when measured at a range of 530 m;

3. Transmitted acoustic signal bandwidth exceeding 3 kHz;

Note:

For 6A001.a.1.e., where multiple detection ranges are specified for various environments, the greatest detection range is used.

6A001.a.1.e