•     The NAVIKNOT Multisensor Speed Log Series offers unlimited flexibility and has been designed with the most modern computer tools for application on all types of vessels. The Speed Logs of Northrop Grumman Sperry Marine measures Speed Over Ground (SOG) and Speed Through Water (STW) with a speed accuracy of +/-1% or 0.1kn whichever is greater.
        The NAVIKNOT’s display provides ships water and ground speed information in an accessible way, for ease of use, quick interpretation and berthing and docking operations.
  • naviknot 350e
    naviknot 350e
    naviknot 350e
    naviknot 350e
    naviknot 350e
    NAVIKNOT Series catalogue >
    NAVIKNOT Electronics Unit, Type 5003
    Power Supply
    supply voltage 24 VDC
    max. ripple content -10 – +20% Vpp
    power consumption 5 W max.
    Dimensions and Weight
    width 340 mm
    height 250 mm
    depth 100 mm
    weight 4.0 kg
    Data Inputs
    EM sensor speed data NAVIKNOT serial protocol
    Control and Display Unit data NMEA 0183 / IEC 61162 (proprietary sentences)
    ext. speed data (backup from GPS) NMEA 0183 / IEC 61162
    serial dimming command NMEA 0183 / IEC 61162
    Data Outputs
    serial data RS-422 outputs, group 1 (3x) NMEA 0183 / IEC 61162; all or selected subset of: longitudinal water speed distance travelled log status (proprietary sentence)
    serial data RS-422 outputs, group 2 (3x) NMEA 0183 / IEC 61162; all or selected subset of: longitudinal water speed distance travelled log status (proprietary sentence)
    NAVIKNOT 350 E Control and Display Units (CDU)
    Power supply
    supply voltage 24 VDC
    max. ripple content -10% – +20% Vpp
    power consumption 4 W max.
    Dimensions and Weight
    width 192 mm
    height 96 mm
    depth 44 mm; approx. 100 mm backward clearance from mounting surface required for connector cable
    weight 2.4 kg
    Preamplifier E, Type 2863
    Power Supply
    supply voltage 230 VAC or 115 VAC, 50-60 Hz
    power consumption 24 W
    Dimensions and Weight
    width 239 mm
    height 285 mm
    depth 83 mm
    weight 3.0 kg
    EM Log Sensors NF, Type 2829
    excitation voltage 24 VDC
    excitation current 1 A
    nominal output voltage 180 μV/kn
    installation method from inside vessel, through hull fittings
    pressure resistance 4 bar (4000 hectopascal)
    dimensions
    weight sensor approx. 20 kg hull fittings approx. 50 kg
  • naviknot 450d
    naviknot 450d
    naviknot 450d
    naviknot 450d
    naviknot 450d
    NAVIKNOT Series catalogue >
    NAVIKNOT Electronics Unit, Type 5003
    Power Supply
    supply voltage 24 VDC
    max. ripple content -10 – +20% Vpp
    power consumption 5 W max.
    Dimensions and Weight
    width 340 mm
    depth 100 mm
    weight 4.0 kg
    Data Inputs
    EM sensor speed data NAVIKNOT serial protocol
    Control and Display Unit data NMEA 0183 / IEC 61162 (proprietary sentences)
    ext. speed data (backup from GPS) NMEA 0183 / IEC 61162
    serial dimming command NMEA 0183 / IEC 61162
    Data Outputs
    serial data RS-422 outputs, group 1 (3x) NMEA 0183 / IEC 61162; all or selected subset of: longitudinal water speed distance travelled log status (proprietary sentence)
    serial data RS-422 outputs, group 2 (3x) NMEA 0183 / IEC 61162; all or selected subset of: longitudinal water speed distance travelled log status (proprietary sentence)
    NAVIKNOT 350 E Control and Display Units (CDU)
    Power supply
    supply voltage 24 VDC
    max. ripple content -10% – +20% Vpp
    power consumption 4 W max.
    Dimensions and Weight
    width 192 mm
    height 96 mm
    depth 44 mm; approx. 100 mm backward clearance from mounting surface required for connector cable
    weight 2.4 kg
    Preamplifier E, Type 2863
    Power Supply
    supply voltage 230 VAC or 115 VAC, 50-60 Hz
    power consumption 24 W
    Dimensions and Weight
    width 239 mm
    height 285 mm
    depth 83 mm
    weight 3.0 kg
    Transducer with Gate Valve
    speed range - 50 to + 50 kn
    radiated power (electrical) 10 W max.
    signal mode pulse
    frequency 2 MHz
    number of beams
    beam width 1.5°
    beam angle 15° from vertical
    minimum required bottom clearance 1.8 m
    installation method from inside vessel, through hull fittings
    ambient temperature, operation - 2 to + 40° C
    protection grade IP 68 to DIN EN 60529; submersible to 35 m
    cable length 18 m (PN 74893 / 5020-AA) or 40 m (PN 74894 / 5020-AB) or 60 m (PN 74895 / 5020-AC)
  • naviknot 600s
    naviknot 600s
    naviknot 600s
    naviknot 600s
    NAVIKNOT Series catalogue >
    NAVIKNOT Electronics Unit, Type 5004
    Power Supply
    supply voltage 24 VDC
    max. ripple content -10 – +20% Vpp
    power consumption 16 W max.
    Dimensions and Weight
    width 340 mm
    height 120 mm
    depth 545 mm
    weight 8.0 kg
    Data Inputs
    Sensing and status from stelite PCB NMEA 0183 / IEC 61162 (proprietary sentences)
    External data (supplementary not required for basic system functionality NMEA 0183 / IEC 61162; true heading, rate of turn
    Control data from CDUs NMEA 0183 / IEC 61162 (proprietary sentences)
    serial dimming command NMEA 0183
    Data Outputs
    serial data RS-422 outputs, group 1 (3x) NMEA 0183 / IEC 61162; all or selected subset of: longitudinal water speed distance travelled log status (proprietary sentence)
    serial data RS-422 outputs, group 2 (3x) NMEA 0183 / IEC 61162; all or selected subset of: longitudinal water speed distance travelled log status (proprietary sentence)
    Control data to satelite PCB NMEA 0183 / IEC 61162; configuration/status/alarms (proprietary sentences)
    Display data to CDUs NMEA 0183 / IEC 61162; speeds/velocity/distances travelled/heading/rate of turn/status/alarms (proprietary sentences)
    NAVIKNOT 600 S Control and Display Units (CDU)
    Power supply
    supply voltage 24 VDC
    max. ripple content -10% – +20% Vpp
    power consumption 4 W max.