Echologger have just launched a new Echosounder - ECT DO52. This duel frequency echosounder comes in two versions EU DO52(USB) or ECT DO52(Serial). The new DO52 follows other Echologger products in being small and compact, with no need for addittional electronics box to run the system.
Its 50Khz Transducer can penetrate under the seabed allowing you to monitor the different layers. With an impressive spec of 100m depth rated and operating range to 200m makes this a brilliant product.