FH800EX-3 | Marine foghorns | Orga
Explosion proof foghorn
Explosion proof foghorn, designed to provide 2 nautical miles omni-directional coverage. For man-made offshore structures and in line with IALA regulatory requirements. Can be supplied as a combined main/secondary (2/½ Nm) foghorn together with duplicated controls in the Navaid Central Control Panel (NCCP).
FH800EX-3 | Marine foghorns | Orga
FH800EX-3 | Marine foghorns | Orga
FH800EX-3 | Marine foghorns | Orga

Key features

  • Reliable marine foghorn, low cost of ownership
  • Suitable for Zone 1 and Zone 2 areas with gas explosion hazard; ATEX & IECEx certified
  • Operating voltage and code control provided from Navaid Central Control Panel (NCCP)
  • Monitoring system integrated in Navaid Central Control Panel (NCCP)
  • Offshore coated seawater resistant light alloy body
  • Stainless steel diaphragm for long term performance and stability


  • Complies with IALA regulation; O-139 The marking of man-made offshore structures – Dec. 2013; chapter 2, paragraph - Fogsignal
  • Complies with UK Department of Energy and Climate Change; Standard marking schedule for offshore installations - April 2011; chapter 4 - secondary fog signal
  • Complies with Mining regulations of the Netherlands – Dec. 2002, Article 5.2 - Fogsignal
  • Complies with US Coast Guard; 33 C.F.R. Part 67 – Aids to navigation on artificial islands and fixed structures
  • Cenelec EN 60079-0, EN 60079-1 and EN 60079-7
  • KEMA 02ATEX2269 (foghorn); ATEX Ex II 2G Ex e llC T6 Gb
  • KEMA 02ATEX2103 X (junction box); ATEX Ex II 2G Ex d llB T6
  • IEC 60079-0, IEC 60079-1 and IEC 60079-7
  • IECEx DEK 11.0105 (foghorn);
    Ex e IIC T6 Gb;
  • IECEx KEM 09.0089X (junction box); Ex d IIB T6
  • ABNT NBR IEC 60079-0, ABNT NBR IEC 60079-1 and ABNT NBR IEC 60079-7
  • Inmetro NCC 13.1778 (foghorn)
  • Inmetro NCC 16.0160 X (junction box)

Performance characteristics

  • Morse code ‘U’ every 30 seconds from Navaid Central Control Panel (NCCP)
  • Alternative codes available; USCG 2 sec blast every 20 seconds (2 sec sound, 18 sec silence)
  • Effective range main foghorn: 2.0NM (134dB(A) at 1 meter)
  • Horizontal sound divergence: 360°

Electrical characteristics

  • Operating voltage: 190Vac ; 860Hz from Navaid Central Control Panel (NCCP)
  • Power consumption: 100W peak (Classic NCCP); 80W peak max (Digital modular NCCP)
  • Connection details: max. 4mm²; one M25x1.5 cable gland entry
  • Earth connection: internal 4mm² and external M6

Physical characteristics

  • Dimensions (L x W x H): 564 x 461 x 1897mm
  • Weight: 175kg
  • Design degree of protection: IP66
  • Operating temperature range: –55°C to +55°C

System design, control and monitoring

  • Control and monitoring via separate control panel (see separate product information sheet)