Description
SKIPPER ESN200 IMO Wheelmarked Echo Sounder
The SKIPPER ESN200 is a dual frequency navigation echo sounder developed by Jotron for SOLAS regulated commercial shipping. Designed around a black box electronic unit paired with a 9″ or 10.1″ colour touch display, the ESN200 continuously presents echo sounder graphics alongside complete navigational details on a single screen. Most of the operating functions are automated, reducing bridge workload and providing officers with reliable depth data in all sea conditions.
For vessels requiring a trusted IMO wheelmarked depth measurement solution, the ESN200 is engineered to satisfy the requirements of flag administrations, port state control, and the leading classification societies. Seanav Marine supplies the SKIPPER ESN200 worldwide, supported by OEM spares, retrofit plate kits for legacy GDS101/GDS102 systems, and full commissioning services.
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System Overview and Engineering Architecture
The SKIPPER ESN200 system is built from a modular set of components that can be tailored to the hull form, draft, and operational profile of the vessel.
The standard ESN200 system consists of:
- SKIPPER CU-M101-SA touch display – 9″ or 10.1″ colour touch display
- SKIPPER JB70E2-SA transceiver unit – black box electronic unit
- SKIPPER transducer – 24 kHz, 38 kHz, 50 kHz, 200 kHz, or dual 50/200 kHz
- SKIPPER tank and valve assembly – selected according to hull configuration
- SKIPPER ZZL-01019 junction box – for echo sounder transducers
- Auto/Manual TVG (Time Varied Gain)
- Auto/Manual gain
- Auto/Manual power
- Auto/Manual range
- Transducer positioning
- Internal sounder for alarm and button press
- IMO wheelmark – SOLAS Chapter V compliant navigation echo sounder
- MED-B (Marine Equipment Directive – B Module) – issued by Bureau Veritas, certificate 54746-C0 MED
- MER-B (UK Marine Equipment Regulation – B Module) – issued by Bureau Veritas, certificate 75356-B0 UK
- CCS (China Classification Society) – type approval certificate BG26PTB00003_02
- Keep the transducer face free of marine fouling and inspect sea valves at every dry dock.
- Verify the integrity of gland and cable connections between the JB70E2-SA transceiver and the transducer tank.
- Check the CU-M101-SA touch display for image quality, touch response, and brightness uniformity.
- Confirm input signals from GPS, gyro, and draft sensor are correctly received on the relevant NMEA 0183 inputs.
- Review the internal 24 hour history log and export the data via LAN, USB, or SD for record keeping.
- Confirm BAM alarm acknowledgements are correctly propagated to the integrated bridge system.
- For vessels fitted with the optional Epson LQ-350 printer, verify paper feed and ribbon condition at routine survey intervals.
- For vessels operating in ice regions, inspect the ice protected combo tank (ETNSTCI or ETNSTCILF) for structural integrity prior to each ice season.
Transducer tanks and valves available for the system include the SKIPPER SB-100-SB (100 mm ball valve for single bottom), DB-100-SB (100 mm ball valve for double bottom), SB-200-ECHO (200 mm gate valve for single bottom), ETNST (standard steel tank), ETNALC (aluminium tank), ETNSTCI (ice protected combo tank), ETNSTCLF (low frequency combo tank), ETNSTCILF (ice protected low frequency combo tank), and ETNSTC (combo steel tank).
The system’s power supply architecture accepts DC 20–32 V and AC 115/230 V, with power consumption rated at 5 W for the display unit and 10 W for the electronic unit. Mounting cut-out dimensions for the display are 224.5 mm wide x 140 mm high, with outside dimensions of 242 mm wide x 158 mm high.
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Core Features and Operational Advantages
The ESN200 is equipped with a comprehensive set of automated and manual functions designed to support accurate depth tracking in a range of operational conditions:
Approved frequencies are 50/200 kHz, 200 kHz, 50 kHz, and 38 kHz. Additional frequencies covered by the system are 24, 30, 33, 100, and 210 kHz. Output power is rated at nominal 700 W, with maximum output greater than 1000 W.
Selectable depth ranges run from 0–5 m up to 0–5000 m, and measuring accuracy is stated as error less than 1%. The system retains 24 hours of depth history internally, and offers external logging capability over the network. Extended internal logging to USB or SD media is supported, and the service software is accessible via LAN.
The ESN200 is designed to be Integrated Navigation System (INS) and Integrated Bridge System (IBS) ready, and supports a wide range of input and output interfaces including NMEA 0183 (IEC 61162-1), LAN (IEC 61192-1), AUX, and relay connections. Data output sentences supported include DPT, PSK DPT, DBS, DBK, ALR, and ALF. Inputs accept signals from GPS, gyro, alarm, and draft sensor. The system language is English.
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Alarms and Bridge Alert Management
The SKIPPER ESN200 is BAM (Bridge Alert Management) compatible in accordance with IEC 62923, with ALF and ALR sentence support. An internal sounder is included for audible alarm and button press confirmation, and a relay output as well as AUX in/out connections are provided for integration with the vessel’s central alarm system. A calendar and clock function is driven from the GPS input.
For fleets that require distributed depth readout, the ESN200 supports optional remote depth indicators. The SKIPPER CD401MR multirepeater, SKIPPER IR31 NMEA remote dimmer, and SKIPPER IR30DIM remote dimmer are supported as accessories. The SKIPPER ENS518-SA transducer selector is also available, allowing the bridge to switch between transducers where multiple units are fitted.
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SOLAS, IMO, IEC, and Classification Society Compliance
The SKIPPER ESN200 is IMO wheelmarked for use on SOLAS regulated vessels. The system holds the following type approvals:
Alarms are designed in accordance with IEC 62923 (Bridge Alert Management), and serial data interfaces comply with IEC 61162-1 (NMEA 0183) and IEC 61192-1 (LAN). Seanav Marine supports owners and operators in verifying that the ESN200 configuration matches the latest class survey requirements for vessels calling at major UAE ports and across international trades.
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Onboard Maintenance and Inspection Standards
Routine onboard maintenance of the ESN200 centres on the transducer face, the display unit, and the transceiver unit. The following inspection points are derived directly from the OEM documentation:
Seanav Marine offers a complete marine echo sounder service portfolio across the UAE, India, Oman, and Egypt, supporting installation, retrofit, calibration, and class survey attendance.
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Compatibility With Related Bridge Equipment
The ESN200 is designed to operate alongside the wider Jotron SKIPPER navigation product family, including the SKIPPER ESN100 IMO wheelmarked echo sounder, the SKIPPER DL21 dual and single axis speed log, the SKIPPER EML1200 dual axis speed log, and the SKIPPER DL2 Doppler Speed Log.
For vessel operators evaluating speed measurement technologies, our Single Axis vs Dual Axis Speed Log guide provides a detailed technical comparison. Owners considering a wider bridge electronics upgrade can review our bridge system upgrade services for Dubai and the UAE and our vessel retrofit solutions in Dubai. Complementary NAVCOM service information is available on our Navcom services in the UAE and Navcom service provider in the UAE pages.
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Global Supply, Retrofit, and Technical Support
The SKIPPER ESN200 is available through Seanav Marine’s worldwide dealer and service network, with stock held for major commercial fleet operators. Spare parts, transducers, tanks, valves, and retrofit plate kits for legacy GDS101/GDS102 systems are available on request. Service is available in most major harbours through Jotron’s extensive dealer network, supported locally by Seanav Marine engineering teams.
For installation in the UAE, Seanav Marine supports vessel operators at Jebel Ali Port, Port Rashid, Khalifa Port, Port of Fujairah, and Khor Fakkan. Across the wider region, our teams provide installation, retrofit, and class survey support in India, Oman, and Egypt, with further details available via our radio survey services pages and marine radar systems and equipment UAE overview.
For technical datasheets, drawings, MTBF figures, and operation and installation manuals, refer to the . To obtain a quotation, lead time, and delivery schedule, please Contact the Seanav Marine Technical Team.
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Printer and Logging Accessories
The ESN200 supports the Epson LQ-350 printer for bridge printing of depth records. Logging capability includes 24 hours of internal history, with extended internal logging to USB or SD media, and external network logging. Service software access is provided via LAN, supporting remote diagnostics and software updates where permitted by class.
Approvals and Documentation Summary
| Approval | Authority | Status |
|---|---|---|
| IMO Wheelmark | SOLAS Ch. V | Held |
| MED-B | Bureau Veritas (54746-C0 MED) | Held |
| MER-B | Bureau Veritas (75356-B0 UK) | Held |
| CCS | China Classification Society (BG26PTB00003_02) | Available on request |
Technical Specifications
| Part Number | ESN200 |
|---|---|
| Display | 9″ or 10.1″ Touch Display |
| Mounting Cut-out Dimensions | 224.5 mm wide x 140 mm high |
| Outside Dimensions | 242 mm wide x 158 mm high |
| Power Supply | DC: 20-32 V; AC: 115/230 V |
| Power Consumption | Display unit 5 W; Electronic unit 10 W |
| Approved Frequencies | 50/200 kHz, 200 kHz, 50 kHz, and 38 kHz |
| Other Frequencies Covered | 24, 30, 33, 100, and 210 kHz |
| Output Power | Nominal 700 W; Max > 1000 W |
| Ranges | Selectable from 0-5 m; Selectable from 0-5000 m |
| Measuring Accuracy | Error less than 1 % |
| Memory | 24 hours history, external logging feature over network |
| Functions | Auto/Manual TVG; Auto/Manual gain; Auto/Manual power; Auto/Manual range; Transducer positioning; Internal sounder for alarm/button press |
| Alarms | BAM compatible (IEC 62923) (ALF and ALR); Internal sounder; Relay output and AUX in/out |
| Calendar/Clock | From GPS input |
| Data Output | 2x LAN (IEC 61192-1) control unit; 5x NMEA 0183 (IEC 61162-1) control unit; 2x AUX control unit; 1x Relay control unit; 3x NMEA 0183 display unit; 1x LAN display unit; DPT, PSK DPT, DBS, DBK, ALR, and ALF |
| Inputs | 3x NMEA 0183 (IEC 61162-1) control unit; 1x AUX control unit; 2x NMEA 0183 Inputs (IEC 61192-1) display; 1x LAN display; Accepting signals from GPS, gyro, alarm, and draft sensor |
| Language | English |
| Printer | Epson LQ-350; Review: service software via LAN; Extended internal logging by USB or SD |
| Options | Remote depth indicators; 24 kHz transducer; 38 kHz transducer; 50 kHz transducer; 200 kHz transducer; Dual 50/200 kHz transducer; Retrofit plate for GDS101/GDS102; Remote dimmer |
| Classification | IMO wheelmarked; MED-B; CCS |
| System Readiness | INS and IBS ready; BAM compatible (IEC 62923); CCS available on request |
| Service | Available in most major harbours, world-wide through extensive dealer network |
| Standard System Components | SKIPPER CU-M101-SA touch display; SKIPPER JB70E2-SA transceiver unit; SKIPPER transducer; SKIPPER ZZL-01019 junction box |
Frequently Asked Questions
1. What class approvals does the SKIPPER ESN200 hold?
The SKIPPER ESN200 is IMO wheelmarked, holds MED-B (Marine Equipment Directive – B Module) approval, MER-B (UK Marine Equipment Regulation – B Module) approval, and CCS (China Classification Society) type approval. CCS is available on request.
2. Is the SKIPPER ESN200 suitable for SOLAS regulated vessels?
Yes. The ESN200 is an IMO wheelmarked navigation echo sounder designed for SOLAS Chapter V compliance, making it suitable for installation on SOLAS regulated commercial vessels.
3. What frequencies does the ESN200 support?
Approved frequencies are 50/200 kHz, 200 kHz, 50 kHz, and 38 kHz. The system additionally covers 24, 30, 33, 100, and 210 kHz.
4. What depth ranges can the ESN200 measure?
Selectable ranges run from 0-5 m to 0-5000 m, with a measuring accuracy of error less than 1%.
5. What is included in the standard ESN200 system?
The standard system consists of the SKIPPER CU-M101-SA touch display (9″ or 10.1″), the SKIPPER JB70E2-SA transceiver unit, a SKIPPER transducer, and the SKIPPER ZZL-01019 junction box. Transducer tanks and valves are selected to match the hull configuration.
6. What output power does the ESN200 deliver?
Nominal output power is 700 W, with a maximum output greater than 1000 W.
7. Is the ESN200 Bridge Alert Management (BAM) compatible?
Yes. The ESN200 is BAM compatible in accordance with IEC 62923, with ALF and ALR sentence support. An internal sounder, relay output, and AUX in/out are provided for alarm integration.
8. What interface options does the ESN200 provide?
The ESN200 provides NMEA 0183 (IEC 61162-1) and LAN (IEC 61192-1) interfaces across both the control and display units, plus AUX and relay connections. Data output sentences include DPT, PSK DPT, DBS, DBK, ALR, and ALF. Inputs accept signals from GPS, gyro, alarm, and draft sensor.
9. Does the ESN200 support remote depth indicators?
Yes. Remote depth indicators are supported as an option, along with the SKIPPER CD401MR multirepeater, SKIPPER IR31 NMEA remote dimmer, and SKIPPER IR30DIM remote dimmer.
10. Can the ESN200 replace a legacy GDS101 or GDS102 echo sounder?
Yes. A retrofit plate for GDS101/GDS102 is available as an option, allowing the ESN200 to be installed as a direct replacement for these legacy systems.
