SKIPPER GDS101 Navigation Echo Sounder TFT Single Channel – EN101C-SA

Item Code:

EN101C-SA

Brand:

SKIPPER Electronics

Condition:

Refurbished

SKIPPER GDS101 NAVIGATION ECHO SOUNDER – TFT SINGLE CHANNEL, PART NO. EN101C-SA

Product Information

Manufacturer	SKIPPER Electronics AS, Norway
Product Name	Echo Sounder navigation SKIPPER GDS101 TFT single channel (as on label)
Model	GDS101
Part Number	EN101C-SA
Serial Number	S115174
Software Version	05.06.01
Revision / Schema	1421
Supply Voltage (label)	20–32 V DC / 115/230 V AC
Compass Safe Distance (label)	Steering 0.25 m / Standard 0.4 m
Approval Marking	Marine Equipment (wheel) mark, DNV 0575/18 (as on label)
PCB / Board Numbers	Not clearly visible in the supplied photographs
Country of Manufacture	Norway (Made in Norway)
Condition	Refurbished

Product Introduction

The SKIPPER GDS101 is a professional navigation echo sounder for merchant ships, built by SKIPPER Electronics AS in Norway. It measures and displays the water depth under the keel on a 10.4" colour TFT display, records depth history and gives shallow and deep water alarms – essential for safe navigation in coastal waters, port approaches and under-keel clearance (UKC) management.

The photographed unit is the single-channel version, part number EN101C-SA, with front keys including Draught Correction, ON/OFF1, OFF2, dimmer and settings, and a rotary control knob. SM MARINE SERVICE™ supplies refurbished SKIPPER echo sounders and spare parts to ships worldwide – send your inquiry through https://www.smmarineservice.com/.

What Is the SKIPPER GDS101 Echo Sounder?

An echo sounder sends short acoustic pulses from a transducer mounted in the ship’s hull and measures the time until the echo returns from the seabed. The GDS101 converts this into water depth, shows a scrolling echogram and digital depth, and sends depth data to the ECDIS, VDR and other bridge systems through NMEA 0183.

SOLAS requires an approved echo sounder on most ships. The GDS101 stores depth, time and position data, so the record of the last 24 hours (and longer on its memory card) is available for review and voyage data recording.

Main Features

10.4" colour TFT display with full dimming and day/night presets.
Single channel – 38, 50 or 200 kHz selectable for one transducer.
Depth range 0–10 m up to 0–1600 m, accuracy better than 1%.
Draught correction key – display depth below keel or below surface.
Shallow and deep water alarms with alarm relays to the ship’s alarm system.
History storage – 24 h continuous depth/time/position log, Compact Flash memory.
NMEA 0183 input (speed, position, heading, time) and output; 4–20 mA and 0–10 V depth outputs.
Dual power supply – 115/230 V AC and 20–32 V DC.

Skipper GDS101 echo sounder keypad with draught correction, ON OFF1, OFF2 and control knob
GDS101 front keypad: Draught Correction, ON/OFF1, OFF2, dimmer, settings and rotary knob.

Main Technical Specifications

Model / Part No.	GDS101 / EN101C-SA (single channel)
Display	10.4" colour TFT LCD
Frequencies	38, 50 or 200 kHz (one transducer)
Depth Range	0–10 m to 0–1600 m
Accuracy	Better than 1%
Output Power	1 kW, adjustable
Power Supply	115–230 V AC 50/60 Hz, or 20–32 V DC
Power Consumption	50 W at 24 V DC; 70 W at 115/230 V AC
Interfaces	NMEA 0183 in/out, 100/200 pulse speed input, trigger and bottom pulse outputs, alarm relays, 4–20 mA and 0–10 V depth, VGA and printer
Panel Cut-out	300 mm W × 320 mm H
Software (photographed unit)	05.06.01, Revision 1421
Compass Safe Distance	Steering 0.25 m / Standard 0.4 m

Inside the Unit: PCBs, Modules & Part Numbers

SKIPPER does not publish separate PCB numbers for the GDS101, and none are visible in the supplied photographs. The main internal assemblies are:

Transceiver Board

Generates the 1 kW transmit pulse and amplifies the received echo from the transducer. Board number: not verified.

Processor / Main Board

Signal processing, bottom detection, alarms, history storage and NMEA interfaces. Board number: not verified.

TFT Display and Keypad

10.4" colour TFT panel with backlight, membrane keypad and rotary encoder.

Power Supply Board

Accepts 115/230 V AC and 20–32 V DC with automatic change-over.

Compact Flash Memory

Stores depth history and settings.

Main Components & Related Units

Transducers: 50 kHz ETN050 series (e.g. ETN050(X)T, ETN050G(X)), 200 kHz ETN200 series (e.g. ETN200(X)T, ETN200S(X)T), 38 kHz ETN038T/G, dual ETS50200 series – select to match frequency and hull
Tanks and sea valves: ETNST steel tank, ETNSTCI ice-class tank, SB-100-SB / DB-100-SB / SB-200-SA sea valves
Repeaters and options: ENIR301-SA depth repeater, CD401MR-SB multi repeater, IR30DIM-SB remote dimmer, EN104-SB printer, ENS518-SA transducer selector
Related SKIPPER echo sounders: GDS101C, GDS102 (EN102C), ESN100, ESN200

Compatibility of each accessory with the GDS101 must be confirmed for your installation.

Marine & Industrial Applications

SOLAS navigation echo sounder on bulk carriers, tankers, container ships and general cargo vessels.
Under-keel clearance (UKC) monitoring in ports, channels and shallow waters.
Depth input to ECDIS, VDR and integrated bridge systems.
Offshore, research, fishing and government vessels.

Skipper GDS101 echo sounder label EN101C-SA S115174 Made in Norway
Original label: SKIPPER GDS101 TFT single channel, P.no EN101C-SA, S/N S115174, SW 05.06.01, 20–32 V DC / 115/230 V AC.

Common Problems & Troubleshooting

No depth / lost bottom – wrong frequency or range, air under the transducer, damaged transducer or cable, transducer fouled by marine growth.
Unstable or false depth – interference from other sounders, aeration in heavy weather, low gain settings.
Blank or dark display – dimmer setting, backlight or display fault, power supply problem.
No depth on ECDIS/VDR – NMEA output settings or cable fault.
Depth alarm not working – check alarm limits and relay wiring.

Safety: never transmit with the transducer out of water during dry-dock. Isolate AC and DC supplies before opening the unit.

Maintenance Tips

Check the transducer and tank during every dry-docking; do not paint the transducer face with standard antifouling.
Set the draught correction correctly after loading changes.
Keep the display clean and check dimming before night watches.
Set shallow-water alarm according to the company’s UKC requirements.
Back up settings and keep the software version recorded.

Spare Parts & Replacement Availability

SM MARINE SERVICE™ supplies SKIPPER GDS101 echo sounders, transducers and spare parts to ships worldwide. Depending on availability, we can offer refurbished, used, reconditioned or new units.

For an accurate quotation please send:

Photo of the unit label (part number, e.g. EN101C-SA, and serial number)
Transducer type and frequency on board
Quantity, vessel name / IMO and delivery port

Availability and condition are confirmed with the quotation. Contact us via www.smmarineservice.com.

Why the GDS101 Is Still Used

The GDS101 is installed on many vessels with matching transducers, cabling and interfaces to ECDIS and VDR. Replacing a faulty display unit with the same EN101C-SA keeps the transducer, panel cut-out, wiring and approvals unchanged, avoiding dry-docking or a complete new echo sounder installation.

Frequently Asked Questions (FAQ)

What is the SKIPPER GDS101?

A 10.4" colour TFT navigation echo sounder made by SKIPPER Electronics AS, Norway.

What is EN101C-SA?

The part number of the GDS101 TFT single-channel version.

Which frequencies does it use?

38, 50 or 200 kHz, selected for one transducer.

What power supply does it need?

115/230 V AC or 20–32 V DC.

What is the maximum depth range?

Up to 0–1600 m depending on frequency and conditions.

Can it send depth to ECDIS and VDR?

Yes, via NMEA 0183 output.

Which transducer do I need?

A SKIPPER transducer matching your frequency, e.g. ETN050 series (50 kHz) or ETN200 series (200 kHz).

Do you supply GDS101 PCBs?

Board numbers are not published; we can quote complete units, boards or repair/exchange subject to availability.

What does the Draught Correction key do?

It sets the ship’s draught so depth can be shown below keel or below the surface.

Do you ship worldwide?

Yes, SM MARINE SERVICE™ arranges worldwide shipping to vessels and ports.

Short Product Description

The SKIPPER GDS101 (part no. EN101C-SA) is a Norwegian-made single-channel navigation echo sounder with a 10.4" colour TFT display, 38/50/200 kHz operation, depth range up to 1600 m, draught correction, shallow/deep alarms, 24-hour history and NMEA 0183 interfaces. It runs on 115/230 V AC or 20–32 V DC and meets IMO echo sounder requirements. SM MARINE SERVICE™ supplies refurbished GDS101 echo sounders, transducers and spares worldwide – contact us for availability and price.

SM MARINE SERVICE™ – Company & Contact Details

SM MARINE SERVICE™
Marine Automation & Navigation Equipment Supplier

Available Equipment Conditions: New • Used • Refurbished • Reconditioned
Specific product condition and availability are subject to confirmation.

Stock Locations: Bangladesh • China

Services: Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing

Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh
Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: https://www.smmarineservice.com/

Need a SKIPPER GDS101 echo sounder or transducer? Send us your requirement today for a fast quotation and worldwide delivery.