service with passion-keeping your ships sailing

JSS is providing 

  • VDR Installations / Surveys / Repairs / Training
  • GMDSS Radio Surveys
  • Bridge Equipment repairs and programming
  • EPIRB + VDR EPIRB programming, registration and instruction
  • Thermographic inspections 
  • Spare Parts for different VDR types
  • Paperless Printer sollution e.g. for Engine Alarm Printer


Testcall to JSS on MF/HF  -  non automatic - contact by phone or whatsapp to confirm
status: currently offline

  • MMSI: 211003536   
  • Call Sign: DB1536  
  • Name: JSS SERVICE
  • Location: Rellingen / Hamburg / Germany

Worldwide Navigation and Communication Service 


Reparatur Schiffsequipment

Installations, surveys, repairs

JSS is specialised on VDR installations, technical support, training and data download for accident evaluation by authorities. GMDSS annual testing for different Classification Societies (IACS)

Thermographic inpections by JSS

Thermographic inspections

Advanced troubleshooting with thermal camera to locate and reduce heat sources to extend the liftime of the on board equipment.

Coordination and planning

JSS is combining more than 13 Years of maritime Electronic Expertise with a high level of coordination management to be on time and adapted to the customer's needs and requirements.

What JSS offers

installation, service and spares for MacGregor Interschalt VDR's
VDR G4e / S-VDR G4e / VDR G4 / S-VDR G4 / MER-VDR / MER-SVDR /MER-SVDR-C

installation, service and spares of Cobham (Thrane & Thrane) and Sailor products

service for all Wärtsilä VDR's  (service request only via Wärtsilä)

service for Hyundai  HIVDR / HIVDR-E 


EPIRB Programming for Brands: JOTRON, SAILOR Cobham, McMurdo, OCEAN SIGNAL

Bridge equipment repairs

Spare Parts in detail:

MER-VDR (ex. Interschalt, ex. MacGregor, Danelec):
Original Batteries
Processor Card CP304
Processor Card CP306
Audio Card
Connection Board CB4
Hard Disk upgrade to SSD
Microphone VCA002, VCA003, VCA004
Network Card
Power Supply
Framegrabber
Cable Set
Filter Set
Spares for fixed Capsules

VDR G4 :
Core Module
Audio2Net Module
Batterie Module Type: H6020001A
NMEA2Net Module



Cp306 Processor Card MER-VDR, VDR4300
  • CP306 including software for MER-VDR or SAM DEBEG4300
  • optional SSD memory instead of HDD


CP304 Processor Card MER-VDR
  • CP304 incl. software for MER-VDR or SAM DEBEG4300
CB4 Connection Board MER-VDR, VDR4300
  • CB4 Connection Board
  • CB2 recond. is also available
SAM Electronics Microphone VCA001
  • Microphone VCA001
  • Avecs / Interschalt Version
  • SAM Electronics Version
Framegrabber FGR5
  • Framegrabber FGR5
  • captures up to 2 Video sources via HDMI, VGA or DVI and sends images via Network


Audio2Net Module VDR G4
  • Audio2Net Module
  • for  VDR G4, VDR G4e SAM Electronics / Wärtsilä VDR 4350 and 4370
Microphone VCA003 MER-VDR, G4, G4e
  • Microphone VCA003
  • for MER-VDR, VDR G4, SAM Electronics / Wärtsilä VDR 4300 and 4350
Microphone VCA004 VDR G4, G4e
  • Microphone VCA004
  • for MER-VDR, VDR G4, VDR G4e SAM Electronics / Wärtsilä VDR 4300, 4350, 4370
NMEA2Net Module VDR G4 , 4350
  • MMEA2Net Module
  • available in grey version for VDR G4 and SAM Electronics / Wärtsilä VDR 4350
  • available in blue version for VDR G4e and Wärtsilä VDR 4370


Battery Module VDR G4, SAM4350
  •  Battery module NiMH VDR G4 3800mAh 
  • for VDR G4 or SAM Electronics / Wärtsilä VDR 4350
Battery Module G4e, VDR4370
  • Battery module VDR-G4e 11500 mAh 
  • for VDR G4e or Wärtsilä VDR 4370
Nemo3.0 diving capsule MER-VDR, G4, G4e, 4350, 4370
  • Nemo3.0 fixed diving capsule
  • 32GB or 64GB
  • for MER-VDR, VDR G4, VDR G4e, Wärtsilä VDR 4350 and 4370

Always a good chance

VDR surveys during Kiel-Canal transit

We are certified by KR, DNV, BV, RINA, ABS, LR, BSH