Kongsberg OPU C20 Telegraph Logger / IPP 144-40 G Marine Engine Order Printer

Title

Kongsberg OPU C20 Telegraph Logger | IPP 144-40 G Marine Engine Order Printer & Bridge Telegraph Logging Unit

Description

Manufacturer / Product Identification

• Manufacturer / Brand: Kongsberg
• Model: OPU C20
• Printer / Logger Section: IPP 144-40 G
• Product Type: Marine Telegraph Logger / Engine Order Printing Unit
• Typical Application: Recording bridge engine telegraph orders, replies, RPM values, and maneuvering history with time stamp

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Introduction

The equipment shown in the photo is a Kongsberg OPU C20 marine telegraph logger fitted with an IPP 144-40 G printing section. This unit is used on board ships to create a hard-copy record of bridge engine telegraph orders and replies, which is very important during maneuvering, departure, arrival, and operational testing.

From the visible paper printout in the photo, entries such as ORDER: STOP, REPLY: STOP, DEAD SLOW ASTERN, and RPM values can be seen. This confirms that the unit is actively used to record engine order commands and telegraph response history between bridge and engine side.

 

 

The printed strip and the front panel markings make it clear that this is not just a small printer. It is part of the ship’s telegraph logging and maneuvering record system, helping the vessel maintain a time-stamped operational history of engine orders.

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What Does the Kongsberg OPU C20 Do?

The Kongsberg OPU C20 / IPP 144-40 G works as a marine telegraph event logger and printer. Its main job is to receive order signals from the bridge telegraph system and print the event sequence on paper.

It typically records

• Bridge order sent to engine side
• Reply / acknowledgement from the receiving side
• Ahead / astern / stop command history
• RPM-related maneuvering values
• Time of each telegraph event

This makes it useful for:

• bridge–engine order verification
• maneuvering documentation
• pre-departure and pre-arrival tests
• incident review and troubleshooting
• audit and operational record keeping

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Main Functions of the Kongsberg Telegraph Logger

1) Engine Order Recording

The logger records telegraph commands such as:

• Stop
• Dead Slow Ahead / Astern
• Slow Ahead / Astern
• Half Ahead / Astern
• Full Ahead / Astern
• RPM-related maneuvering changes depending on vessel configuration

2) Reply / Acknowledgement Logging

It also logs the reply from the receiving side. This is important because it shows whether the order was acknowledged correctly and at what time.

3) Time-Stamped Maneuvering History

Each order and reply is printed with a time reference, creating a chronological maneuvering record.

4) Test Documentation

The label under the unit in your photo mentions telegraph logger synchronization and pre-departure / pre-arrival test with signature, which shows that the logger is also used during routine shipboard testing and documentation.

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Visible Features in the Photo

From the uploaded image, several practical details can be identified:

IPP 144-40 G Printer Section

The upper section is the printing / logging part where telegraph events are printed on paper.

OPU C20 Main Unit

The lower unit marked Kongsberg OPU C20 is the main operator / control section of the logger arrangement.

Alarm Indicator

A red ALARM lamp is visible on the left side. This may indicate:

• printer fault
• paper problem
• communication fault
• internal logger error

Line Feed / Menu Buttons

The front panel includes:

• LINE FEED / Enter
• MENU / Select

These are typically used for paper feed and local menu handling.

ON Lamp

The green ON lamp confirms that the unit is powered.

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Where This Unit Is Used on Ships

The Kongsberg OPU C20 / IPP 144-40 G is generally used in:

• Main engine telegraph systems
• Bridge–engine order logging arrangements
• Engine control room maneuvering record systems
• Older or mid-generation Kongsberg automation setups
• Ships where printed telegraph records are still required

It may be found on:

• cargo vessels
• tankers
• offshore support vessels
• passenger ships
• other merchant ships with Kongsberg bridge-engine communication systems

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Common Problems in Telegraph Logger Units

Like many marine printer-based logging devices, this unit can develop faults due to age, paper mechanism wear, or electrical issues.

Common faults include

• paper not feeding properly
• faded or missing print
• alarm light active
• telegraph orders not printing
• buttons not responding
• power ON but no print output
• communication fault between telegraph system and logger

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Basic Troubleshooting Checklist

Power Check

• confirm the ON light is healthy
• check supply voltage, fuse, and breaker
• inspect control power to the OPU C20

Printer Check

• inspect paper roll condition
• test LINE FEED function
• check for jammed paper or damaged feed mechanism
• inspect print quality and paper path

Signal / Communication Check

• verify telegraph orders are reaching the logger
• inspect interface wiring and terminals
• check whether the fault is in the logger or in the incoming telegraph signal

Alarm Review

If the alarm lamp is active, check for:

• paper end
• printer error
• communication issue
• internal logger fault

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Why Kongsberg OPU C20 Spare Parts Are Still Needed

Many ships still keep their original Kongsberg telegraph logging arrangement because:

• it is already integrated with the vessel’s control system
• it still performs its function reliably
• replacing the full telegraph logger system can be expensive
• often only the printer section, OPU unit, interface board, or power-related component needs replacement

That is why marine buyers still search for:

• Kongsberg OPU C20
• IPP 144-40 G
• marine telegraph logger spare parts
• Kongsberg printer/logger modules
• telegraph control system replacement units

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SM MARINE SERVICE™ Support

SM MARINE SERVICE™ supports marine customers with new and reconditioned marine automation equipment depending on requirement and budget.

We can support

• Kongsberg telegraph logger units
• OPU C20 related spare parts
• IPP 144-40 G printer/logger support
• marine automation spare parts sourcing
• troubleshooting support for legacy marine telegraph systems
• worldwide supply support from Bangladesh and China channels

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Conclusion

The Kongsberg OPU C20 with IPP 144-40 G is a marine telegraph logger and engine order printing unit used to record bridge engine orders, replies, RPM-related maneuvering events, and time-stamped telegraph history. It remains an important part of many shipboard control systems because it provides a clear printed record of telegraph communication for operation, testing, verification, and troubleshooting.

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SM MARINE SERVICE™

Global Marine Equipment & Spare Parts Partner

Bangladesh Office:
Samir Market, DT Road, Pahartali, Beside CDA Market, Chattogram, Bangladesh

China Warehouse & Support Center:
Shanghai, China

Website:
www.smmarineservice.com

Email:
info@smmarineservice.com

WhatsApp:
+8801818929292

Marketing Contact:
Nazmul Hasan Bhuiyan

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