Electromagnetic speed log

Ship speed measurement – Electromagnetic speed logs, or EM log, indicates the speed and the distance travelled through the water.

ANTHEA electromagnetic speed log

The ANTHEA EM speed log is designed for merchant and cruising ships. It is used with maximum 70 m length of cable, between the main cabinet and the sensor.

For standard operations, the ANTHEA log uses a 48 mm sensor. It can be adapted to other BEN Marine sensors that have the same electrical characteristics.

ANTHEA standard version speed log consists of:

►  One IP65 metal case
►  One sensor
►  One hull fitting

ANTHEA is compatible with all navigation peripherals.

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BLIND ANTHEA electromagnetic speed log

The BLIND ANTHEA EM speed log is designed for all type of civil ships. It can be installed near to the sensor. There is no distance limitation between the cabinet and its peripherals.

For standard operations, BLIND ANTHEA uses model 48 mm. It can be adapted to other BEN Marine sensors that have the same electrical characteristics.

The BLIND ANTHEA speed log consists of:

►  One IP65 metal case
►  One sensor
►  One hull fitting

BLIND ANTHEA is compatible with all navigation peripherals.

CALYPSO electromagnetic speed log

The CALYPSO electromagnetic speed log meets IMO regulations. It is specially designed for large commercial ships, with over 100 m cable requirement between the main cabinet and the sensor.

The CALYPSO speed log consists of:

►  One IP65 metal case
One blind transmitter located near to the sensor
►  One sensor
►  One hull fitting

ALIZE electromagnetic speed log

ALIZE is an electromagnetic speed log dedicated to small ships or pleasure boats. Its flat sensor, without mobile or protruding component, offers unequalled accuracy and robustness.

The ALIZE speed log consists of:

►  One main display unit IP67 (wall or bracket mounting)
►  One Noryl retractable sensor with 5 m cable
►  One screw-on type Noryl hull fitting

LMN6 electromagnetic speed log

The LMN6 EM speed log is designed to withstand the severe environment of military naval vessels. It complies with major military and maritime standards.

It is upward compatible with previous LMN versions.

The log measures the speed over the water in the lengthwise and crosswise axis of the vessel using one or two electromagnetic sensors, calculates the partial and total distance travelled, and distributes navigation information – speeds, distances travelled, the status and alarms – on analog and digital interfaces (NMEA protocol on series RS422 bus and Ethernet IP link).

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LMN5 naval electromagnetic speed log

Single or dual axis speed measurement.

The LMN5 electromagnetic log perfectly meets the climatic, mechanical and radio electrical resistance standards applicable to the equipment on board the Navy ships.

The LMN5 electromagnetic log includes an electromagnetic sensor, a processing unit, a repeater and a programming console.

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LMN5 DUO naval electromagnetic speed log

The LMN5 DUO includes two electromagnetic sensors: one is positioned to port, the other to starboard. Both sensors operate simultaneously and independently from each other. The calculation of the average speed of the two sensors improve significantly the accuracy of the speed when turn or in strong lateral current.

Configuration provides redundancy and back-up sensor in case of failure.

CLETA electromagnetic speed log

This electromagnetic speed log combines the well-known quality and reliability of BEN Marine with the latest technologies. A multifunction color display also includes speed-over-ground data from GPS as well as the heading information and more on request.

The CLETA EM speed log consists of:

►  One main cabinet
►  One transducer
►  One hull-fitting

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Related resources

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