Consilium is the supplier of SAL Speed Logs and to date has equipped well over 20,000 ships. From the beginning Consilium has placed the emphasis on product leadership through innovation and quality. Our commitment to excellence begins with the use of superior technology and culminates with unmatched build quality to provide ship owners, builders and crews with equipment that delivers a performance second to none.

speed

Consilium’s range of SAL Speed Logs has been deliberately expanded so that Consilium is in the position to provide vessels of all size with a first class speed log system to suit its specific requirement. Using advanced technology and innovative design all users of Consilium SAL Speed Logs are able to accurately record the speed of their vessel whatever the conditions.

The pioneering spirit that personifies Consilium is clearly evident in the company’s unstinting determination to find new technological solutions. And it is this unique drive for perfection that continues to be at the heart of all marine equipment Consilium manufacturers.

SAL R1a

This system is a one-axis relative speed log – measures speed through water in longitudinal direction ahead and stern.

SAL T2

This system measures longitudinal and transversal true speed and longitudinal relative speed and depth. This version is also available as a docking log.

SAL T2+

A system with simultaneous and independent measurement of relative speed through water and true two-axis speed over ground; intended for ships over 50.000 GT.

SAL T3

This system combines the features of SAL T2 with echo sounding – measures relative speed as well as two axis true speed and water depth down to 250 meters.(This is the world’s first approved combination of speed log and echo sounder in one housing using only one combined transducer.)

SAL Speed Logs give you more

As a company committed to the highest quality you’ll find all our equipment combines state-of-the art technology with robust built quality.

SAL R1a is the fourth generation acoustic correlation SAL speed log for measuring relative speed – speed through the water. The log is designed to meet requirements as specified by authorities and shipowners. Its performance exceeds the various IMO specifications and has proven reliability in many thousand installations worldwide.

Main features of the SAL R1a log

  • Acoustic correlation technology.
  • Easy set-up and calibration procedures from the bridge SD4 indicator.
  • Flexible calibration allows very accurate reading over the speed range.
  • Small size bottom arrangement – transducer diameter 32 mm – for easy installation.
  • Bottom arrangements are fully compatible with previous models of SAL Imcor and SAL R1.
  • A number of various bottom part adapters enables retrofit, exchange of existing systems, even on ships afloat.

General Description

The basic version of SAL R1a includes bottom arrangements – alternatively with or without sea valve, transducer, electronics unit all mounted in the bow area and SD-indicators as selected installed in the bridge area.

The unit provides serial output signal according to IEC 61162-1 (NMEA 0183) as well as 200 pulses per NM and analogue voltage output.

Construction

The electronics are mounted on a circuit board enclosed in a splash proof steel box. Cable glands are provided in the bottom plate of the box.

Bottom arrangements are available for both single and double bottom hull constructions including sea valve for easy access and maintenance, and if necessary, exchange of transducer from inside without dry-docking.

The SAL T2 measures longitudinal relative speed through water as well as two-axis true speed over ground. In combination with an external Rate of Turn Gyro a full docking log functionality is achieved.

Electronics Unit – ELC

The ELC controls the measurements. It contains two independent units, one for speed through water measurement and one for speed over ground measurement. Both measuring functions are based on the acoustic correlation principle. The basic concept is the measurement of the time delay between the characteristics of reflected sonic patterns sensed by the receivers. Echo signal modulation is used for speed estimation. The speed is estimated from the fix distance between sensor elements divided by the estimated time delay from correlation, where two signals are compared by shifting one relative to the other in time, and choosing the time shift where the maximum similarity is found. The speed data calculated in the ELC is sent as serial IEC61162-1 / NMEA messages for further processing in the LPU or directly to any other user.

Transducer – TRU

The combined transducer is mounted in a sea valve arrangement suitable both for single and double bottom designs. The transducer incorporates as standard a 30 metres cable for connection to the ELC. This one combined transducer that is equipped with separate crystals for relative water speed and true speed over ground. The crystals work both as transmitters and receivers..

Log Processing Unit – LPU

The LPU is mounted on the wheelhouse area and receives the NMEA message from the ELC. The LPU has various options to perform message conversion and calculations and has also variety of inputs for receiving data from other units e.g. Rate of Turn Gyro for docking functionality. Various outputs are available for external users, such as autopilot, radar, AIS, VDR, fin stabilizers, etc. Serial Digital Indicators – SD4 The SD4 series of indicators gives a flexible solution to the presentation of longitudinal and transverse speeds and distance measurement or docking information.

The new SAL T2+ Speed Log is designed for ships over 50.000 GT with simultaneous and independent measurement of relative speed through water and true two-axis speed over ground

New stricter interpretation of SOLAS requirement for Speed and Distance Measuring Equipment (SDME) for vessels +50 000 GT.
As a result of the new and stricter interpretation of SOLAS Ch. V, Reg 19 Paragraph 2.3.4 and 2.9.2, ships of 50 000 gross tonnage and upwards must be equipped with two separate and independent devices to indicate speed and distance over ground and speed and distance through water.

Dual axis speed logs

A vast majority of the dual axis speed logs available on the market, based on the Doppler principle, are therefore no longer compliant with the SOLAS carriage requirements.
In order for Doppler speed logs to comply with the SOLAS requirements it is necessary to use two separate speed logs, one for speed over ground and one for speed through water, with two complete installations.

Acoustic Correlation Principle

With the Acoustic Correlation Principle it is possible to fullfill the requirements for independent and simultaneous measurement with the installation of only one system and only one hull penetration.

The new SAL T2+ speed log system complies with the carriage requirement in SOLAS, Chapter V, Reg. 19, sec. 2.3.4 and sec. 2.9.2.

SAL T3 combines the speed log features with echo sounding – measuring longitudinal relative speed through water as well as two-axis true speed over ground and water depth down to 250 metres.

The SAL T-series is the first type-approved combination of speed log and echo sounder in one housing using only one combined transducer. In combination with an external Rate of Turn Gyro a full docking log functionality is achieved.

Electronics Unit – ELC

The ELC controls the measurements of the system. It contains two independent units, one unit for speed through water and another for depth and speed over ground measuring. Also the depth and the speed over ground systems have full redundancy. Both measuring functions are based on the acoustic correlation principle. The basic concept is the measurement of the time delay between the characteristics of reflected sonic pattern sensed by the receivers. The time delay from transmission till echo reception is used for depth estimation. Echo signal modulation is used for speed estimation. The speed is estimated from the fix distance between sensor elements divided by the estimated time delay from correlation, where two signals are compared by shifting one relative to the other in time, and choosing the time shift where the maximum similarity is found. The data calculated in the ELC is sent as serial IEC61162-1 / NMEA messages for further processing in the LPU.

Transducer – TRU

The combined transducer is mounted in a sea valve arrangement suitable both for single and double bottom designs. The transducer incorporates as standard a 30 metres cable for connection to the ELC. By means of separate crystals, both relative water speed and true speed over ground and water depth are measured. The crystals work both as transmitters and receivers.

Log Processing Unit – LPU

The LPU is mounted on the wheelhouse area and receives the NMEA message from the ELC. The LPU has various options to perform message conversion and calculations and has also variety of inputs for receiving data from other units. Various outputs are available for external users, such as autopilot, radar, AIS, VDR, fin stabilizers, etc.

Serial Digital Indicators – SD4

The LPU is mounted on the wheelhouse area and receives the NMEA message from the ELC. The LPU has various options to perform message conversion and calculations and has also variety of inputs for receiving data from other units. Various outputs are available for external users, such as autopilot, radar, AIS, VDR, fin stabilizers, etc.

Echo Sounder Display – ESD2

The ESD gives a comprehensive graphic overview of the echo sounder presentations, as well as provides 24 hours history review.