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The EM 712 minimum acquisition depth is less than 3 m below its transducers, and the maximum depth is 3600 m, dependent on array size. Across-track coverage (swath width) is up to 5.5 times water depth, with a maximum of up to 4400 m.\n\nThe EM 712 operates in the 40 to 100 kHz frequency range at a maximum ping rate of 30 Hz, with a swath coverage sector of up to 140°. The EM 712 transmit fan is divided into three sectors, transmitted sequentially within each ping on distinct frequencies or waveforms, to maximise range capability and suppress interference from multiples of strong bottom echoes. Beam focusing is applied to transmit and receive beams, with dynamic focusing on all receive beams, and roll (±15°), pitch (±10°) and yaw (±10°) stabilisation is applied in real time.\n\nThe datasheet describes three versions: the full performance EM 712, which supports FM sweep pulses, and the EM 712S and EM 712 RD, which use CW pulses. Maximum depth is 3600 m for the EM 712 0.25° × 0.5°, 3200 m for the EM 712 0.5° × 1°, 1800 m for the EM 712S 1° × 2° and 600 m for the EM 712 RD. Transducer arrays range from 0.25° × 0.5° (TX length 3880 mm, RX length 1940 mm) to 2° × 2° (TX and RX length 490 mm), with up to 1600 beams per ping in dual swath mode.\n\nThe EM 712 Transmitter Unit measures 600 × 380 × 600 mm (W × H × D) and weighs 67.5 kg, and the Receiver Unit measures 250 × 350 × 260 mm (W × H × D) and weighs 11 kg. An EM 712 USV Subsea Transceiver Unit measures 600 × 227 × 650 mm (W × H × D) and weighs 150 kg. Listed features include dual swath, modular design, water column display, water column logging, extra detections, FM chirp and seabed image.",[235,236,237,238,239,240],"Frequency range 40–100 kHz, max ping rate 30 Hz","Swath up to 140°, up to 5.5 × water depth","Max depth 3600 m, max coverage 4400 m (0.25° × 0.5°)","Minimum depth 3 m","Up to 1600 beams per ping (dual swath mode)","Arrays from 0.25° × 0.5° to 2° × 2°","Kongsberg",{"_type":243,"asset":244},"image",{"_ref":245,"_type":229},"image-5244e9eafa76029a1ca94991e09208df5c82f79f-745x480-png","Rent a Kongsberg EM 712 multibeam echosounder: 40–100 kHz, swath up to 5.5 times water depth, max depth 3600 m and coverage up to 4400 m (array dependent).","EM 712 Multibeam Echosounder, 3600 m","Kongsberg EM 712 multibeam echosounder operating at 40–100 kHz, mapping from less than 3 m to a maximum of 3600 m depth, with swath width up to 5.5 times water depth (max 4400 m).",{"_type":250,"current":251},"slug","kongsberg-em-712-multibeam-echosounder","40–100 kHz Seabed Mapping Multibeam Echosounder",[254,259,263,267,271,275,279,283,286,290,294,298,302,306,310,314,318,322,326,330,334,338,342,346,350],{"_key":255,"_type":256,"label":257,"value":258},"60bcad3c7ebe","specRow","Frequency range","40 to 100 kHz",{"_key":260,"_type":256,"label":261,"value":262},"9d814c5d76df","Max ping rate","30 Hz",{"_key":264,"_type":256,"label":265,"value":266},"31921b3b6b08","Swath coverage sector","Up to 140°",{"_key":268,"_type":256,"label":269,"value":270},"0d31fc375da3","Swath width","Up to 5.5 × water depth, max up to 4400 m",{"_key":272,"_type":256,"label":273,"value":274},"aa138f785206","Beam patterns","Equiangular and equidistant",{"_key":276,"_type":256,"label":277,"value":278},"6bdfd2d3c19f","Roll stabilised beams","±15°",{"_key":280,"_type":256,"label":281,"value":282},"72d29bec9881","Pitch stabilised beams","±10°",{"_key":284,"_type":256,"label":285,"value":282},"ee433cc9553b","Yaw stabilised beams",{"_key":287,"_type":256,"label":288,"value":289},"4ffd3c4b43b1","Transmit sectors","3, transmitted sequentially within each ping",{"_key":291,"_type":256,"label":292,"value":293},"4d829dc5f65c","Max depth (EM 712 0.25° × 0.5° \u002F EM 712 0.5° × 1° \u002F EM 712S 1° × 2° \u002F EM 712 RD)","3600 m \u002F 3200 m \u002F 1800 m \u002F 600 m",{"_key":295,"_type":256,"label":296,"value":297},"ee3399701294","Min depth (all versions)","3 m",{"_key":299,"_type":256,"label":300,"value":301},"faa9384e4478","CW transmit pulses","0.2 to 2 ms (EM 712 and EM 712S); 0.2 ms (EM 712 RD)",{"_key":303,"_type":256,"label":304,"value":305},"fb3dd8137a28","FM sweep pulse","Yes (EM 712); no (EM 712S, EM 712 RD)",{"_key":307,"_type":256,"label":308,"value":309},"f9f0cc1e6900","EM 712 max coverage, summer","4400 m (0.25° × 0.5°), 4200 m (0.5° × 0.5°), 3950 m (0.5° × 1°), 3700 m (1° × 1°), 3550 m (1° × 2°), 3350 m (2° × 2°)",{"_key":311,"_type":256,"label":312,"value":313},"bd73fc9c4386","EM 712 max depth, summer","3600 m (0.25° × 0.5°), 3400 m (0.5° × 0.5°), 3200 m (0.5° × 1°), 3100 m (1° × 1°), 2900 m (1° × 2°), 2800 m (2° × 2°)",{"_key":315,"_type":256,"label":316,"value":317},"86744c99f713","Depth and coverage conditions","BS = −20 dB, NL = 35 dB, f = 40 kHz",{"_key":319,"_type":256,"label":320,"value":321},"6a8cdca6b160","TX length","3880 mm (0.25° × 0.5°), 1940 mm (0.5° × 0.5°), 1940 mm (0.5° × 1°), 970 mm (1° × 1°), 970 mm (1° × 2°), 490 mm (2° × 2°)",{"_key":323,"_type":256,"label":324,"value":325},"2e3228473ea5","RX length","1940 mm (0.25° × 0.5°), 1940 mm (0.5° × 0.5°), 970 mm (0.5° × 1°), 970 mm (1° × 1°), 490 mm (1° × 2°), 490 mm (2° × 2°)",{"_key":327,"_type":256,"label":328,"value":329},"877725315aa8","Transducer width × depth (all arrays)","224 mm × 118 mm",{"_key":331,"_type":256,"label":332,"value":333},"c9c6fd7091d0","Max no. of beams per ping (dual swath mode)","1600 (0.25° × 0.5°), 1600 (0.5° × 0.5°), 800 (0.5° × 1°), 800 (1° × 1°), 400 (1° × 2°), 400 (2° × 2°)",{"_key":335,"_type":256,"label":336,"value":337},"7f283680a46b","EM 712 RD availability","Only with the 2° receiver array configurations",{"_key":339,"_type":256,"label":340,"value":341},"ed4753fa3efd","Transmitter Unit","600 × 380 × 600 mm (W × H × D) \u002F 67.5 kg",{"_key":343,"_type":256,"label":344,"value":345},"48669b759dea","Receiver Unit","250 × 350 × 260 mm (W × H × D) \u002F 11 kg",{"_key":347,"_type":256,"label":348,"value":349},"2d2f459d67fe","EM 712 USV Subsea Transceiver Unit","600 × 227 × 650 mm (W × H × D) \u002F 150 kg",{"_key":351,"_type":256,"label":352,"value":353},"e1dc50d1ba65","Features","Very high resolution, wide frequency range, FM chirp, roll, pitch and yaw stabilisation, transmit and receive nearfield focusing, seabed image, dual swath, modular design, water column display, water column logging, extra detections","Kongsberg EM 712 Multibeam Echosounder"]