JRC REVIEW No.54 Technical Reports

- Special Issues : Marine bridge system -

On high value-added large commercial vessels including liquefied natural gas (LNG) tankers, demand has been grown for not only higher performance of navigation equipment but also for highly integrated system. In response to this demand, JRC has developed a system that integrates machinery and cargo control system with navigation equipment system for LNG tankers. JRC has also developed an integrated system assisting special operation for double-acting tanker with forward and backward propulsion. JRC's integrated navigation system can be expected to contribute greatly to safe and efficient navigation.

Naoki Yokoyama
Hajime Andou
Tomohiro Nakamura
Keiichi Hirayama
Juichi Suzuki
Toshihiko Koyama

- Special Issues : Marine bridge system -

Worldwide maintenance service is an important issue for marine equipment. In recent years, port state control (PSC) has become stricter, and the ability to get quality service at ports of call is more important than ever.

In the remote maintenance system, JRC service centers facilitate effective maintenance and repairs by remotely monitoring the status of the JRC navigation and communication equipment installed on a vessel. This system is essential for providing targeted maintenance services at a low cost, and JRC is working on implementing it as soon as possible.

Masaki Takayama
Masatoshi Uenohira
Kazuhiro Shiraiwa
Hideo Mochizuki
Ryoichi Uchijima
Akihisa Shimozumi

- Special Issues : Marine bridge system -

The navigational Radar which will be installed after 1st July 2008 needs to comply with new IMO standard MSC.192 (79) . Because the new IMO standard requires higher performance than the old standard, JRC must develop the new navigational Radar urgently. And since the recent high sea vessels are going to adopt Integrated Bridge System (IBS) , the navigational Radar needs to work in cooperation with other navigational equipments.

Therefore JRC has developed the new navigational Radar JMA-9100 series that can comply with new IMO standard satisfy the demand of the market, and also get higher performance and reliability than past product. This equipment will be a core product of JRC Integrated Bridge System.

Hideki Hashimoto
Masaru Kawaguchi

- Special Issues : Marine bridge system -

Recently maintenance-free radars are strongly demanded by customers, because the use of radar has increased dramatically for ensuring safe navigation of vessels-consequently making the maintenance costs burden to replace their shorter-lived magnetrons. As if responding the customer demand, the International Maritime Organization (IMO) radar performance standard MSC 192 (79) covering shipborne equipment shall come into force in July 2008; which will allow the new technology radar in the S-band frequency, in addition to the conventional pulse radars with a magnetron. In such circumstances, JRC has developed an S-band shipborne solid-state radar for the Safety Of Life At Sea (SOLAS) vessels. This radar has adopted the pulse compression method; for which we developed a several hundred-watt transmitter-receiver unit and the signal processing unit to realize the pulse compression technology. We have confirmed that our new radar achieves as sufficient performance as the conventional magnetron radars, through the field evaluation on a practical vessel.

Masanori Sudoh
Hiroki Sugawara
Masaya Sawayanagi
Yukinobu Tokieda

- Special Issues : Marine bridge system -

ECDIS equipment is specified in the IMO ECDIS Performance Standards (IMO Resolution A.817(19)) as follows:

"Electronic Chart Display and Information System (ECDIS) means a navigation information system which, with adequate back up arrangements, can be accepted as complying with the up-to-date chart required by regulation V/19&V/27 of the 1974 SOLAS Convention, by displaying selected information from a system electronic navigational chart (SENC) with positional information from navigation sensors to assist the mariner in route planning and route monitoring, and by displaying additional navigation-related information if required."

In future, the demands for ECDIS as an indispensable device for safe navigation of the ship is expected to rise more and more with the increasing number of published electronic navigation chart (ENC) and also the increase of resource and energy import by rising countries such as China.

In this report will introduce new model ECDIS which JRC has developed along with the latest revision of the rule of IMO.

Keiichi Hirayama
Juichi Suzuki
Takeshi Tokoi
Hideo Mochizuki
Noriyuki Kawai
Yusuke Shibuya

- Special Issues : Marine bridge system -

The Conning Display collectively displays information required for navigation and maneuvering with data from the connected Navigation equipments. This equipment brings effective monitoring of navigation information and prevention of human errors. Additionally, this equipment supports you for safety navigation and efficient transportation.

OSV Conning Display for various, Offshore Service Vessels (OSV) .

Keiichi Oka
Hideo Mochizuki
Ryoichi Uchijima
Akihisa Shimozumi

- Special Issues : Marine bridge system -

In maritime satellite communication field, the broadband ship-shore communication is required than ever. Due to advancing render seamless with terrestrial network and variously growing user's demands not only managing ship's operation but also satisfying crew and passenger's private use. In response to this situation, Inmarsat launched the Fleet Broadband (FBB) service system in November 2007.

In the same time JRC has developed and released JUE-250 which is the world's first Ship Earth Station for this FBB system. JUE-250 provides excellent data communication speed, high-quality circuit/voice, which are proven by on-board tests including packet communication test, voice test, and communication evaluation test. FBB system is expected to be the mainstream of the maritime satellite communication in the future, by widen its service to all ocean regions.

Koichi Konnai
Noriyuki Shiga
Koh Yamane
Nobuyuki Ito
Hirohisa Kusano
Shintaro Inoue

- Special Issues : Marine bridge system -

Marine VHF Radiotelephone is required to install by the Global Maritime Distress and Safety System (GMDSS) . This equipment is used for communication with nearby ship station and/or coast station. It is important to safety navigation. However, since the target ship's name is not known, an effective radio call may not be able to be performed. By using AIS information, a ship can call a target ship more simply and certainly. JRC has developed marine VHF radiotelephone with direct call function by AIS.

Takeshi Okude
Yoshio Miyadera
Yoshihiko Imada
Hirofumi Tamaoki
Soichiro Wada
Yuya Fujiwara

- Special Issues : Marine bridge system -

The JLR-20 and JLR-30 GPS Compass are a new type of true heading measurement device. They use GPS satellite signals to precisely measure a ship's heading. The GPS Compass is composed of two units, a sensor (antenna) unit, and a display unit.

The sensor unit features(1)reduced heading measurement time (settling time) achieved through newly developed phasedifference measurement algorithms,(2)high-speed tracking that can deal reliably with extreme maneuvering, and(3)high stability that allows for continued measurement even in rough waters. The display unit has a 5.7-inch high-contrast monochrome LCD and a variety of useful display modes, such as a compass display.

This time around, to meet the needs of the market, JRC has developed two GPS Compass models, the general-purpose JLR-20, and the highly precise JLR-30.

Hiroya Suzuki
Koji Ogawa
Yuuji Koura
Hirotaka Suko
Mikio Nakamura
Taro Kasihwayanagi

- Special Issues : Marine bridge system -

Many of today's advanced fishing vessels are equipped with multiple units of the same equipment so that observations can be made from various locations within a ship simultaneously. There is a particular demand for a system that allows observations to be made from radar, sonar, and fish finders in a variety of locations. Conventionally, only the displays are placed in a variety of locations, but recently there has been a strong demand for a system that allows for the operation of the equipment at the observation location, especially in order to detect and pursue fish with scanning sonars. In response to this demand, JRC has developed a multi-display, multi-control device that allows for control between multiple displays through serial communication. This document will introduce that device.

Yasuo Fukushima
Toshimi Yamashita
Yoshito Suzuki
Naoki Horino
Hideki Horiuchi