The equipment for the acoustic survey

From YMG

Contents 1 Echo-sounders 1.1 PEL-D Double-frequency hydrographic survey echo-sounder 1.2 Simrad EM 12S-120 multi-beam echo-sounder 1.3 Simrad EM 3000D multi-beam echo-sounder 2 Sonars 2.1 Deep-water geo-acoustic systems of MAK series 2.2 Katran-D Side scan sonar

Echo-sounders

PEL-D Double-frequency hydrographic survey echo-sounder

PEL-D is a double-frequency hydrographic survey echo-sounder for seabed surveys, designed and constructed by YMG.

Echo-sounder provides:

• Indication of echo signals and depth on a display;

• Registration of the seabed relief on thermal paper in coordinates with coordinate scale;

• Depth data on the navigation system digitally;

• Recording of depths in digital form on magnetic tape;

• Input of corrections about transducers depth, sound velocity and pitch;

• Data Input from the navigation system about distance and time marks, displaying this information on monitors and on paper recorders.

Specifications:
Frequency	Standard: 200 kHz (HF) / 30 kHz (LF), options are available
Frequency range	20–500 ms (15–250 m) HF / 20–2000 ms (15–1500 m) LF
Sounding interval	100–2000 ms (10 ms step) or automatic
Power of transmitter	350 W
Instrumental error	0,2% max HF / 0,5% max LF
Recording	HDD, MOD, RS-232, Ethernet, display
Swell compensator	TSS, Seatex MRU, analog swell compensator
Data-output format	NMEA, Atlas Deso, Innerspace, Simrad
Navigation	Supports NMEA GGA, RMC, GLL, VTG messages. Direct connection to GPS receiver.

Simrad EM 12S-120 multi-beam echo-sounder

Simrad EM 12S-120 is a low-frequency (13 kHz) multi-beam echo-sounder with 90°, 105° and 120° operating from 50 to 11000 m depth range with maximum ship's speed (depending on density of observation).

Echo sounder has 81 beams (1,5° each) and can work in two modes — shallow and deep.

Shallow mode is used at depths from 50 to 700 m with 2 ms pulse length.

Deep water mode is used at depths from 700 to 11000 m, 10 ms pulse length.

Simrad EM 12S-120 is not a completely automated system and it can be connected to the following external sensors:

• MRU-5 sensor of roll & pitch and vertical heave;

• Guis ship gyrocompass;

• Satelite navigation equipment Trimble;

• SVPlus sensor of sound velocity profile in water;

• SmartSV sensor of sound velocity in surface water.

Simrad EM 3000D multi-beam echo-sounder

EM 3000D is a high resolution multi-beam echo-sounder.

Use: bathymetric and geotechnical surveys.

Specifications:
Frequency	300 kHz
Depth	0,5 — 300 m
Pulse length	100–2000 ms (10 ms step) or automatic
Beam widthwidth	1,5 × 1,5°
Number of beams	127

Sonars

Deep-water geo-acoustic systems of MAK series

МАК-1М is a multi-purpose, efficient geo-acoustic system for sonar survey and seismo-acoustic profiling of seabed designed and constructed by YMG.

• High resolution acoustic profiler

• Resolution allows for identification of underwater cables and pipelines of minimum 30 mm diameter

• On-line digital data processing

Application:

• Detailed geological and site surveys at depths up to 6000 m

• Exploration of solid minerals

• Environmental monitoring of water areas

• Control over underwater construction

• Search for sunken objects

Tow acoustic system
Sensors of tilt and orientation of underwater vehicles
Operating depth	50 — 6000 m
Max tow speed	up to 4 knots
High resolution sonarresolution
Operating frequency	100 kHz
Swath for each side	up to 300 m
Long range sonar
Operating frequency	30 kHz
Swath for each side	up to 1500 m
Acoustic profiler
Operating frequencyfrequency	5 kHz
Penetration depth	up to 150 m
Weight of tow fish (in air)	500 kg

Katran-D Side scan sonar

Katran-D is a towed side scan sonar for geological seabed surveys, site surveys and search of objects in shelf zones.

Specifications
TOWED FISH		ELECTRONIC BOX
Frequency	100 kHz	Based on: Intel Pentium with MS Windows NT Recording: HDD, MOD, Ethernet, display Graphic recorder: EPC thermal printers, Ultra, Ocean, any analog. HP LaserJet, Canon Bubble Jet. Input data from navigation systems: format, compatible with modern navigation systems Power supply: 220 V, 50 Hz, 300 W max.
Range of view	50 — 250 m
Resolution	15 sm
Transducers pattern	1 × 50 degrees
Operating depths	up to 200 m
Power supply	+50 V, 200 mA
Dimensions	1410 mm, 75 mm in diameter
Weight	15 kg