Radar Navigation

Marine Radar Equipment JRC JMA-5310-6

Target Detection by Latest Signal Processing Technology

The system employs the latest digital signal processing technology to eliminate undesired clutter from the radar video signals that are obtained from the receiver with a wide dynamic range, thus improving the target detection.

Advanced Technology Based ARPA/ATA Functions (Option)

The ARPA target acquisition and tracking performance is enhanced by the use of the fastest DSP and tracking algorithm. So stable operation in target tracking under clutter is ensured.

• Acquisition and tracking of 100 targets for ARPA, 30 targets for ATA.
• Trial maneuvering functions provided. (ARPA)
• Tracks of up to 20 target ships can be stored with a maximum of 1,500 points for each of them, and displayed distinguished by using seven different colors.

GPS Compass JLR-10T

This unit has the following features:

• JRC specific dual antenna methods: A dual antenna method that as applied has excellent bearing precision and reception rate, and can be easily installed.
• Excellent tracking capacity: The tracking capacity is much better than that of a gyro compass.
• Can be connected directly to a JRC Radar: Since this unit outputs the data of the JRC Radar at high speed, it is possile to fully bring out the performance capabilities of the Radar and any ARPA functions.
• Output of the orientation, position, and speed data: This unit also has the functions of a GPS receiver.

Echo-Sounder JRC JFE-582

The JFE-582 Echo-Sounder consists of a transducer mounted on the bottom of the ship's hull and a main unit the displays information on the depth and formation of the sea bottom. This information is gained by using ultrasonic waves sent from the transducer that are then reflected off the sea bottom and picked up again by the transducer. The JFE-582 also has the following functions:

(1) depth alarm, (2) power fail alarm, (3) output of depth data, (4) output of depth and power fail alarms.

Navigation Equipment 

AIS MCMURDO-2

The AIS Transponder transmits information which is separated into three groups:

Static data - Vessel name, type, length and breadth, MMSI and IMO numbers and GNSS antenna location.

Dynamic data - Position, accuracy integrity of the position, time, course and speed over ground and navigational status.

Voyage data - Cargo, draught, port of destination and estimated time of arrival.

In addition, the AIS can transmit and receive Safety Messages. These may include navigation safety information, warnings of floating objects, collisions, meteorological situations, etc.

Simrad CS66 Chart System

CS66 is a planning, monitoring and reporting system for navigation.

CS66 8-channels system may be used as backup in an Electronic Chart Display and Information System (ECDIS), as both hardware and software are approved as ECDIS backup. To conform to the IMO performance standards for ECDIS, an authorized chart database has to be used when the CS66 system is used as backup. An ECDIS backup system must also include ECDIS type approved monitor.

CS66 displays the vessel position, speed and course in real time in the chart, based on information received from navigational sensors.

Doppler Log JRC JLN-205

• Coresspondence of bubble influence: The transducer was made small. As a result, we can install the transducer in Bow.
• WT speed measurement at 3m depth: The velocity of WT is measured by using high frequency (2MHz) based on the reflection signal between about 2-3m under the bottom of a ship.
• Improvement of signal processing speed: A newly Doppler frequency detector circuit was developed. As a result the measurement by very shallow depth became possible.

Weather Facsimile Receiver JRC JAX-9A

• The JAX-9A receives facsimile broadcasting signals (2MHz to 25 MHz) including weather and marine charts and graphically prints them on thermal recording paper.
• With the JJC decoder (NWF-45), the JAX-9A can receive and print pay broadcasting signals (from the Kyodo News).

To receive the pay broadcasting, you must make a contract with the Kyodo News Service and rent the JJC decoder (NWF-45) from the Kyodo News.

Naval communication

INMARSAT mini-C GMDSS

The Inmarsat-C is a communication system, which enables the user to send and receive data to and from mobile terminals. The Inmarsat-C system provides the possibility of reching remote areas where other methods of communication are impossible. The Inmarsat-C satellite network provides the link between the mobile and the destination office. It uses four geostationary satellites to cover the world. Satellite data link coverage is complete between 70◦ North and 70◦ South.

Satellite Terminal Nera F77

The Nera F77 satellite terminal provides 64 kbps speech, 4.8 kbps low cost speech via the Inmarsat satellite system. Telefax can be transmitted at 64 kbps or 9.6 kbps.
Nera F77 offers 64 kbps data service and MPDS (Mobile Packet Data Service). It also supports 128 kbps extended ISDN data service. All services are supported in spot & global beam.

Navtex Receiver JRC NCR-333

The NAVTEX NCR-333 function receives and displays the various types of information broadcast for frequencies of 518 kHz, 490 kHz and 4209.5 kHz, such as: navigational warning, meteorological warning, search and rescue information, and other types of information. NCR-333 also provides the function that selects information type and coast station for intended uses.

Sailor System 4000 GMDSS

The equipment is a 250 W MF/HF transceiver for voice, DSC and telex operation designed for maritime applications in voluntary as wekk as compulsorily fitted vessels. The basic version offers simplex and semi-duplex SSB radiotelephone communication in the maritime mobile frequency bands between 1.6 and 30 MHz. With the buit-in DSC/Telex modem and optional single channel or scanning DSC watch receiver the equipment forms an ideal system for MF of MF/HF GMDSS installations.