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Spare Parts





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Bridge Navigational Watch Alarm Systems Spare Parts Suppliers

A Bridge Navigational Watch Alarm System (BNWAS) keeps the bridge alarm chain working when the officer of the watch stops responding. 

Like all electronics at sea, the unit eventually needs replacement parts. Reset buttons wear out from constant pressing. Motion sensors collect dust and lose sensitivity. Controllers fail under voltage spikes. Sounders age and crack. Each of these stops the system from passing its annual class survey. 

BNWAS spare parts suppliers keep the right components in stock and matched to the right brand. RecordsMarine's directory groups vetted vendors by region, so a chief officer can find replacement stock before the next survey window.

Common BNWAS Spare Parts

The parts ordered most often:

  • Reset buttons for bridge consoles
  • Motion sensors (PIR and microwave types)
  • Main controller units and timer boards
  • Power supply modules and backup batteries
  • Cabin and crew alarm sounders
  • Visual flashing beacons and indicator lamps
  • Wiring harnesses and connector blocks
  • Front panel keypads and displays
  • Software memory cards and firmware modules.

Reset buttons and motion sensors are the highest-turnover items. Suppliers of BNWAS spare parts typically stock these in depth across the major brands. Controllers and timer boards have lower demand but longer lead times when ordered.

Brand-Specific Stock Matters

The BNWAS market splits across Daniamant, Furuno, JRC, Tokyo Keiki, McMurdo, and Marine Technologies. 

Parts cannot be swapped between brands. A Daniamant motion sensor will not fit a Furuno controller. Software keys, connector pinouts, and reset codes all differ. 

BNWAS spare parts distributors with strong inventory carry stock across at least three brands. Single-brand specialists go deeper on one platform but force the buyer to manage multiple supplier relationships across a mixed fleet.

OEM and Aftermarket Stock

Most ships use both channels. OEM parts come directly from the system maker and carry full type approval. Aftermarket parts are sourced through authorised resellers and often ship faster. Both work for non-critical items like wiring harnesses and indicator lamps. Safety-critical items, such as controllers, motion sensors, and reset buttons, should always carry valid type approval paperwork.

What to Check Before Ordering

A counterfeit controller can pass bench testing and fail two months into service. Class surveyors check part documentation during the annual safety survey, and a missing certificate can hold the ship in port. Before approving any new BNWAS spare parts suppliers, confirm:

  • Direct OEM sourcing or documented aftermarket chain
  • IMO MSC.128(75) type approval certificates with each part
  • Stock lists matching the brands fitted to your fleet
  • Delivery to your main trading ports
  • 12-month warranty minimum on electronic boards
  • Returns policy on incorrect or sealed items.

Stock Onboard

Most ships keep a small reserve in the bridge spares locker. One spare reset button per console, one motion sensor, and a set of fuses cover most common failures. Larger items like controllers are usually ordered when needed rather than held in stock.

Frequently Asked Questions

Can a BNWAS run with a failed motion sensor?

Yes, in manual mode. The system reverts to button-only reset until the sensor is replaced. Class surveyors accept this as a temporary condition but expect repair within a defined window.

How long do BNWAS reset buttons typically last?

Most last five to eight years under normal bridge use. Heavy-traffic ships replace them sooner. Premature failure usually means a wiring fault or a faulty batch.

Are software memory cards swappable between identical units?

Sometimes. Some models tie firmware to the controller serial number and require an OEM-issued unlock. Confirm with the supplier before ordering a card-only replacement.

Find BNWAS Spare Parts Suppliers Near You

The directory below sorts vendors by port and brand coverage. Match supplier inventory to the BNWAS models on your ships before placing the first order.

  • SEASTAR (HK) TRADE LIMITED logo

    Year Founded: 2018

    Verified

    SEASTAR (HK) TRADE LIMITED

    Verified

    providing original spare parts for main engines, auxiliary machinery, engine room equipment, and deck auxiliary systems to domestic and international shipowners and management companies. competitive pricing Our global service network and professional logistics team ensure timely delivery of your spare parts to designated ports and destinations. Heat Exchanger Galley Equipment Electric motor Deck Crane Grab Windlass Mooring Winch Hatch Cover Gangway Ladder Winch Steering Gear Pintle Bush Synthetic Phenol Resin Valve Fire Alarm Detector Navigation Communication Equipment Water Ingress Alarm System Electrical Instrument and Automation Fuel Valve Test Device Main Engine Auxiliary Engine Turbocharger Air Compressor M/E Auxiliary Blower Pumps Boiler Incinerator Fresh Water Generator Oily-water Separator Sewage Water Treatment Plant 15ppm Bilge Alarm Fuel Oil supply Module Purifier Refrigeration and Air Conditioning

    supply@seastartrade.com

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

      (195)

    BRAND:

    • Daniamant

    • MARINELEC

    • Jinbo

    • BI Industrial

    • SM Electrics

      (21)

    CLASS APPROVED:

    • ABS

    • ClassNK

    • CCS

    • BV

    WAREHOUSES:

    • China

  • Japan Marine (S) Pte ltd logo

    Year Founded: 2011

    Verified

    Verified

    We have listed our Key Strength Equipments as below for easy reference. We are strong in Main engines Aux Engines /Generators Compressors Main Air , Breathing , Refrigeration, Marine Pumps Purifiers /Separator Hatch Cover Spares / Hydraulic spares Electrical Hydraulic Motors Air horns Toilet Vacuum Systems Electrical spares and small components A/C Compressors HVAC system spares Boiler and Incinerators https://jmsgroup.jp/products/

    jmsgroup.jp
    operations@jmsgroup.jp

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

      (177)

    BRAND:

    • Daniamant

    • MARINELEC

    • Jinbo

    • BI Industrial

    • SM Electrics

      (21)

    CLASS APPROVED:

    • DNV

    WAREHOUSES:

    • Singapore

    • United Arab Emirates

    • Angola

    • Austria

    • Australia (209)

  • ARK MARINE SERVICE INC. logo

    Year Founded: 2004

    Verified

    Verified

    We specialize in providing original equipment supplies, primarily for main and auxiliary engine spares. As a factory-based company, we ensure the best pricing without compromising on quality. Our dedicated logistics team handles all deliveries efficiently, offering competitive rates for air, sea, and courier services.

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

    • AUS (Automatic Unloading Systems)

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Air Horns

    • Air Reservoirs

    • Air Starters

    • Alpha Lubrication Systems

    • Anemometers

      (162)

    CLASS APPROVED:

    • ClassNK

    • BV

  • MARINE INDUSTRIAL GROUP LIMITED logo

    Year Founded: 2025

    Verified

    Verified

    SUPPLIER OF OEM , ORIGINAL , OR SECOND HAND OF MARINE PARTS -Marine oil Lubricants -Marine Engines -Pumps -Main Engine -Auxiliary Engine/Generator -Engine Spares -Propeller -Hydraulics -Pumps Spares -Oil Purifier Spares -Heat Exchanger -Air Compressors Spares -Turbo Chargers Spares Marine Industrial Group: Excellence in Marine Solutions With a commitment to superior service and quality products, Marine Industrial Group is your go-to source for marine engineering supplies. We specialize in ship spare parts and auxiliary systems. MIG- Marine Industrial Group Limited

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

    • AUS (Automatic Unloading Systems)

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Air Horns

    • Air Reservoirs

    • Air Starters

    • Alpha Lubrication Systems

    • Anemometers

      (166)

    WAREHOUSES:

    • Hong Kong

  • NEW CHANNEL CHINA INTERNATIONAL CO LTD logo

    Year Founded: 2010

    RM verified

    RM verified

    SHIP SPARE PARTS, SHIP EQUIPMENT, ALTERNATIVE SOLUTIONS, SHIP REPAIR, INSPECTION SERVICES, SHIP REPAIR BROKER, OFFSHORE EQUIPMENT, CONSUMERABLES, PROVISIONS, ON-SITE SUPPLY SERVICE PROVIDER, TECHNICAL TEAM FOR ASSISTANCE

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Air Horns

    • Air Reservoirs

    • Air Starters

    • AIS (Automatic Identification Systems)

    • Alpha Lubrication Systems

    • AMS (Alarm Monitoring Systems)

    • Anemometers

    • Anti-Heeling Systems

    • ARPA (Automatic Radar Plotting Aids)

      (166)

    CLASS APPROVED:

    • ABS

    • RINA

    • RMRS

    • ClassNK

    • CCS

      (11)

  • Accurate Ship Spares logo

    Year Founded: 2014

    SUPPLIERS OF MARINE SHIP SPARES AND AUTOMATION EQUIPMENTS

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • Alpha Lubrication Systems

    • Automation Control Equipment & Control Units

    • Communication Equipment

    • Boiler Automation Equipment

    • ODME (Oil Discharge Monitoring Equipment)

    • Oil Mist Detection Systems

    • Viscosimeters

    • Navigation Equipment

    WAREHOUSES:

    • India

  • Arctic Ship Repair logo

    Year Founded: 2024

    Arctic Ship Repair ensures fast, reliable supply of genuine and OEM marine spare parts worldwide. From critical engine components to deck, electrical, and safety equipment, we source and deliver with precision. Our global network and technical expertise allow us to match exact specifications, ensuring compatibility and class compliance. Whether for planned maintenance or urgent repairs, we minimize downtime with prompt logistics and transparent tracking. Arctic Ship Repairyour trusted partner for dependable spare parts, delivered on time and ready to perform.

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Automation Control Equipment & Control Units

    • BWTS (Ballast Water Treatment Systems)

    • Boat Engines

    • Boiler Automation Equipment

    • Centrifugal Pumps

    • Communication Equipment

    • Compass (Gyro & Magnetic)

    • Cranes

      (91)

    WAREHOUSES:

    • Turkey

  • international marine office logo

    Year Founded: 2014

    Welcome to International Marine Office IMO The Integrated Partner for Maritime Offshore Excellence Welcome to International Marine Office IMO, your comprehensive strategic partner providing full-spectrum solutions across the entire maritime and offshore lifecycle. We are a globally recognized force in engineering, construction, and operational support, committed to driving efficiency and sustainability for our clients. International Marine Office IMO, a powerhouse in the global maritime sector, specializing in delivering comprehensive solutions from design to delivery and throughout the operational lifecycle of your vessel. For over than 20 years experience, IMO has been the trusted name for clients demanding reliability, innovation, and integrated service excellence. Our expertise is built upon a foundation of deep technical knowledge across all phases of the marine industry:

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

    • AUS (Automatic Unloading Systems)

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Air Horns

    • Air Reservoirs

    • Air Starters

    • Alpha Lubrication Systems

    • Anemometers

      (168)

    WAREHOUSES:

    • Egypt

  • SOVHAN MARINE SYNDICATE logo

    Year Founded: 1998

    Trusted exporter and reseller of genuine OEM and quality used ship spare parts. All items are carefully sourced from ship demolition yards, thoroughly overhauled, and tested to ensure reliable performance.

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

      (166)

    BRAND:

    • Daniamant

    • MARINELEC

    • Jinbo

    • BI Industrial

    • SM Electrics

      (21)

    CLASS APPROVED:

    • ABS

    • ClassNK

    • BV

    • LR

    • DNV

      (1)

    WAREHOUSES:

    • Bangladesh

  • DIESEL PARTNERS COREA CO.LTD logo

    Year Founded: 2013

    1. marine engine spare parts 1.1. MAIN ENGINE 1.1.1. 2 stroke engine spare parts - MAN, WARTSILA, MITSUBISHI, HANSHIN etc. 1.2. AUX. ENGINE 1.2.1. 4 stroke engine spare parts - MAN Holeby, YANMAR, DAIHATSU etc. 1.3. TURBOCHARGER 1.3.1. MAN Tubocharger major components additionally IHI, MET, ABB Turbocharger etc. 1.4. GENERATOR SET 1.4.1. MARINE 1.4.2. MARINE EMERGENCY 1.4.3. STATIONARY 1.4.4. ALTERNATOR 2. AUXILIARY MACHINERIES PARTS AS PER CONTENTS IN OUR WEBSITE 3. EXPERT LOGISTICS SERVICES

    CATEGORIES:

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

    • AUS (Automatic Unloading Systems)

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

      (172)

    CLASS APPROVED:

    • DNV

    WAREHOUSES:

    • South Korea