Simrad ITI Manuel utilisateur

Simrad ITI

Trawl monitoring system

TECHNOLOGY FOR SUSTAINABLE FISHERIES

www.simrad.com

Measures position of signel and twin trawls

Full range of sensors

Split beam transducer technology

Nine display modes of efcient use

Well proven technology

Locate lost gear

SIMRAD ITI

Simrad ITI is the ultimate wireless Trawl Positioning and Monitoring System.

Simrad ITI is a complete wireless

trawl positioning and monitoring

system. It is designed to improve

control and efciency in pelagic

and bottom trawling. Small,

robust, battery-powered

sensors mounted on the

trawl, transmit important

information to the vessel on

request.

The Simrad ITI allows you to

monitor the exact position of the gear,

and what is happening in and around

the trawl. This provides crucial

information for effective, protable

and responsible shing.

Adaptable and easy to use

The Simrad ITI is a modular

system. Starting with one sensor, the

Simrad ITI system can be expanded to

a complete and advanced instrument

package.

Data from the trawl mounted

sensors is presented on a colour

monitor with emphasis on ease of

use. Operation is simple and based on

display menus.

Robust, serviceable and

intelligent

The Simrad ITI is designed for

the future, and it is based on the

proven technology. The sensors are

extremely robust with serviceable

and replaceable electronics. By

only responding when interrogated,

prolonged operational life between

charges is achieved.

The Simrad ITI is designed for

interfacing with navigational systems,

sonars and echo sounders.

Position of the trawl

One of the great advantages of the

Simrad ITI system is the ability to

measure the range and bearing to each

sensor.

Knowing the position of the

trawl allows you to avoid wrecks

and obstacles on the seabed. You are

able to target shing grounds more

efcient based on information from

your echo sounder and sonar.

A major benefit of the ITI system is

the trawl positioning feature. By knowing the trawl´s position you

can avoid wrecks and obstacles on the

seabed.

The ITI Tactical display shows all

necessaryinformation with regard to

the trawl´s position relative to the

vessel.

Display options

The Simrad ITI System has many

display modes. Logged data from the

sensors and navigational instruments,

stored in real time, provides valuable

information for each tow. The

temperature - depth prole indicates

correct positioning and the grid sensor

shows the angle of the sorting grid.

Simrad was the rst company to develop an entire range of trawl monitoring

systems using LCD monitors.

SIMRAD ITI

Distance and bearing, trawl geometry

and catch are displayed in the

horizontal projection.

The Trawl Eye echogram shows

position of the trawl relative to the

bottom, sh in the opening and the

height of the trawl.

The Simrad ITI system is operated by

self-explanatory menus. The menu is

available in several languages.

The menu entries can be

selected using the keypad.

SIMRAD ITI

A) Depth/Temperature sensor

This sensor monitors the depth

of the trawl, and the water

temperature.

B) Trawl Eye sensor

The sensor monitors the trawl

opening

C) Distance/Spread sensor

The distance sensors monitor door

or wing spread.

D) Catch sensor

The catch sensors acknowledge

as the cod end lls with sh,

indicated by a green square icon

on the screen turning red when the

sensor is activated.

Trawl monitoring with Simrad ITI

The Normal mode provides you with an overview of

important catch and trawl data.

The Simrad Trawl Eye sensor has

a sophisticated built-in echo sounder

providing information on sh in the

trawl opening, the height of the trawl

and clearance to the bottom.

The amount of sh in the opening

is clearly displayed and the density

of sh is indicated by echo strength.

The footrope and bottom sounding

are constantly monitored giving

information on the trawl opening and

behavior of the trawl when bottom

trawling. Information is displayed as

an easy to understand echosounder

picture. The Trawl Eye is best suited

for bottom and medium size pelagic

trawlers.

The Trawl Eye echogram gives detailed information about the trawl opening,

sh entering the trawl and footrope bottom contact.

SIMRAD ITI

Monitoring of the trawl and catch situation

The Normal mode picture presents you with a complete overview of the trawl and catch situation

on the screen.

The picture is divided into three

sections:

1 Distance and bearing to the trawl,

door or wing spread and the catch

are displayed in the horizontal

section.

2 The vertical section showing

the depth of the trawl, the sea

temperature, the catch, the bottom

contours from the echo sounder

and the time lag between the vessel

and the trawl.

3 The height of the trawl, the

bottom clearance and the trawl

deviation from the ship’s course

line, is displayed in the aft view

section. In addition, the ship’s

echo sounder coverage at the trawl

depth is shown.

The Simrad ITI Trawl Eye - efcient wireless net sounding

The Simrad Trawl Eye monitors the trawl opening.

SIMRAD ITI

A) Spread Sensor

The spread sensors monitor the

distance between the center weight

and both trawl doors.

B) Trawl Eye/Height Sensor

The Trawl Eye and Height sensor

monitors the trawl opening.

C) Twin Combi sensor

This sensor monitors the depth,

and the ambient water temperature.

D) Catch Sensor

The Catch sensors acknowledge

as the cod end lls up sh. This

is indicated both visually and

audibly.

Twin trawl monitoring with Simrad ITI

SIMRAD ITI

With better than 1 m relative accuracy,

the new Simrad ITI Geometry System

provides measurements for: “Vessel to

starboard and port trawl door and Vessel

to the center weight.”

With this accuracy, the ITI Geometry

System will measure the distances

between the center weight and both trawl

doors.

The ITI system can be expanded

to provide a wide variety of data. The

Twin Combi sensor is located on the

center weight to detect depth and water

temperature. The Trawl Eye sensor and

the Height sensor can be mounted in the

trawl openings to detect trawl heights,

bottom contact and sh entering the

trawl. In addition, Catch sensors can be

mounted on both cod ends to measure the

amount of sh caught.

The wireless Simrad ITI transponder system for Twin Rigging is designed to utilize a minimum of

transponders to achieve full coverage of the trawl geometry and true movement over the bottom.

Simrad ITI Trawl Geometry - full control of Twin Trawl

SIMRAD ITI

Kongsberg Maritime AS

Strandpromenaden 50

P. O.Box111

N-3191 Horten,Norway

Simrad

Telephone: +4733034000

Telefax: +4733042987

simrad.sales@simrad.com

www.simrad.com

340165 / Rev.A / October 2009

System

The ITI System consists of the

following main units:

• Display monitor (*)

• Transceiver Unit

• Dual or triple split beam transducer

system

• Trawl mounted sensors and Trawl

Eye

(*) The display is not a part of the delivery,

and must be obtained locally. The display must

comply to a standard VGAoutput. All sizes

can be used, but the ITI has not been prepared

for wide screens (16:9).

Display modes and operation

• Normal mode: Horizontal and

vertical section, athwartships view

• Tactical display: Bird’s eye view

with target and trawl position

• Temp/Depth: Depth/temperature

gradient curve

• Trawl Data Log: Stored trawl data

• Grid: Grid angle

• Status views: System parameter

setting

• Trawl Eye echogram: Side view of

trawl opening

• Trawl Eye, split screen: Side

view of trawl opening, range and

bearing to the trawl

• Test: Sensor communication

protocol

• Operation: Keypad operated

multilingual menu

Range

Selectable scales:

• Max 4000 m. Detection range

depends on transducer installation,

ambient noise level, temperature

gradient and sensor alignment.

• Measuring accuracy:

- Distance: Typical ± 5 m

- Bearing: Typical ± 1°

Data interfaces

• Gyro: Stepper/synchro types

• Speed log: Pulse, analogue, Simrad

NL Doppler Log, or GPS

• Serial lines: Four NMEA0183

serial lines

• Option: Ethernet interface

Power requirements

• Voltage: 220 Vac, ±15%, 50/60 Hz

• Consumption: 90 W

Transducer

Ceramic, split beam transducer type,

supplied with 20 m cable, diameter

12 mm in a dual or triple transducer

configuration.

• Beam width: 40° (-3 dB), circular

• Horizontal coverage: 70° -100°

depending on arrangement (two

single or one triple)

Technical specications

Note that the specications can be altered

without prior warning.

Sensors

Common sensor specications:

• Moulded housing with replaceable

electronics

• Rechargeable batteries

• Operational life between charging:

Approximately 40 hours when

interrogated every 15 seconds

• Max operating depth: 2000 m

• Frequency range: 27 - 33 kHz

• Weight: Approximately 3 kg (in

water).

• Sensor types:

Depth sensor

Temperature sensor

Temperature/Depth combination

Spread sensor

Trawl Eye sensor

Catch sensor

Height sensor

Grid sensor

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