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Instrumentation Solutions For The Marine Industry

BALLAST-TANK LEVEL MONITORING & CONTROL I DRAFT MEASUREMENT & TRIM OPTIMIZATION I FUEL-OIL, LUBE-OIL & SERVICE-TANK MANAGEMENT I MARINE VESSEL SYSTEM MANAGEMENT I POTABLE-WATER, GREY-WATER, BILGE & HOLDING-TANK MONITORING

For over half of a century, NOSHOK and KING-GAGE, A NOSHOK Company, have been providing custom Measurement Solutions to the Marine industry, helping vessel owners, operators and shipbuilders improve safety, stability, and operational efficiency across demanding onboard environments.

From ballast-tank level monitoring and draft measurement to fuel-oil, lube-oil and service-tank management, NOSHOK delivers rugged marine instrumentation engineered for accuracy, repeatability, and long-term reliability in harsh shipboard applications. Our portfolio includes tank level measurement systems, multiple tank indicators, electronic column indicators, hydrostatic purge-control systems, electronic transmitters, and vessel-management interfaces that integrate seamlessly into modern marine monitoring platforms and control systems.

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Marine Instrumentation Systems from KING-GAGE, A NOSHOK Company: For Marine Tank Level Gauging, Draft Measurement And Ballast Monitoring

Applications Include

Ballast-Tank Level Monitoring & Control

Ballast-Tank Level Monitoring & Control

Reliable ballast-tank level measurement and control is essential to vessel stability, trim correction and ballast-water management. NOSHOK and KING-GAGE provide continuous level gauging, centralized indication and hydrostatic measurement technologies that stand up to demanding marine environments while helping crews improve visibility, reduce manual checks and maintain safe vessel operation.

Challenge NOSHOK Solution Purpose
Continuously monitoring ballast-tank levels across multiple tanks

Tank Level Measurement System (contact NOSHOK for technical assistance), Submersible Level Transmitters, Radar Level Transmitters

Provides continuous real-time measurement of multiple ballast tanks to support stable vessel operation.
Providing centralized ballast indication where multiple tank readouts are required

Multiple Tank Indicator With Optional Set Point Controller (contact NOSHOK for technical assistance)

Delivers compact multiple-tank indication for ballast-water applications and improves crew visibility from a central location.
Giving operators quick visual recognition of changing tank levels

LevelBAR Electronic Column Indicator

Provides clear visual indication that helps operators recognize tank status at a glance.
Measuring ballast level using hydrostatic downpipe methods in marine environments

Differential Pressure Purge Control Level Transmitter

Enables dependable hydrostatic tank-level measurement using downpipe sensing for challenging marine ballast applications.
Draft Measurement & Trim Optimization

Draft Measurement & Trim Optimization

Accurate draft data is critical for safe loading, navigation and fuel-efficient vessel operation. NOSHOK and KING-GAGE offer draft-monitoring solutions that combine hydrostatic measurement, centralized indication and system-level visibility to help operators monitor bow and stern draft conditions in real time.

Challenge NOSHOK Solution Purpose
Measuring ship's draft with dependable hydrostatic sensing

Differential Pressure Purge Control Level Transmitter

Provides electronic output for draft measurement to support safe vessel operation and loading awareness.
Displaying draft values alongside tank information on centralized marine systems

Tank Level Measurement System (contact NOSHOK for technical assistance), 

Provides graphical display of draft and tank information for broader vessel-management visibility.
Providing compact indication of draft points in multi-channel installations

Multiple Tank Indicator With Optional Set Point Controller (contact NOSHOK for technical assistance)

Supports draft indication in applications where centralized multi-point visibility is needed.
Improving operator response through clear visual draft status

LevelBAR Electronic Column Indicator

Offers bright visual indication that helps crews quickly assess changing draft-related conditions.
Fuel-Oil, Lube-Oil & Service-Tank Management

Fuel-Oil, Lube-Oil & Service-Tank Management

Marine vessels depend on accurate tank-level information to maintain fuel supply, protect engines and generators and support orderly onboard operations. NOSHOK and KING-GAGE provide multi-tank indication, real-time level gauging and centralized display solutions that improve fluid visibility and reduce reliance on manual sounding.

Challenge NOSHOK Solution Purpose
Monitoring multiple fuel-oil, lube-oil and service tanks from a central station

Tank Level Measurement System (contact NOSHOK for technical assistance)

Provides graphical display and real-time visibility for service and consumable tanks across the vessel.
Providing compact indication for fuel oil and other marine utility tanks

Multiple Tank Indicator With Optional Set Point Controller (contact NOSHOK for technical assistance)

Delivers centralized indication for multiple marine tanks with a practical, space-efficient interface.
Giving operators immediate visual confirmation of changing tank levels

LevelBAR Electronic Column Indicator

Improves tank-level recognition and helps crews identify abnormal conditions more quickly.
Supporting dependable tank gauging using hydrostatic measurement methods

Differential Pressure Purge Control Level Transmitter and hydrostatic downpipe sensing systems

Provides stable level measurement in marine tank applications where hydrostatic gauging is preferred.
Marine Vessel System Management

Marine Vessel System Management

Modern marine operations benefit from centralized monitoring of tank levels and draft conditions across ballast, utility and service systems. NOSHOK and KING-GAGE solutions provide graphical displays, process indication and multi-tank visibility that support faster decisions, improved coordination and better vessel awareness.

Challenge NOSHOK Solution Purpose
Integrating multiple tank and draft inputs into a centralized vessel view

Tank Level Measurement System (contact NOSHOK for technical assistance)

Provides graphical display of multiple tanks and vessel draft for marine vessel system management.
Providing compact local or control-room indication across multiple marine channels

Multiple Tank Indicator With Optional Set Point Controller (contact NOSHOK for technical assistance)

Delivers multi-point indication for ballast water, fuel oil, potable water and draft measurement.
Improving operator awareness with easy-to-read local visual indication

LevelBAR Electronic Column Indicator

Offers bright graphical level indication for key marine tanks and system points.
Connecting level measurement to monitoring and control infrastructure

Hydrostatic Level Transmitters (Submersible Level Transmitters, Cage-Protected Submersible Level Transmitters, Intrinsically Safe Submersible Liquid Level Transmitters), Differential Pressure Purge Control Level Transmitter 
or a Intrinsically Safe Pressure Transmitter or High Accuracy Fixed Range Transmitter mounted externally on the tank

Enables integration with receivers, alarm panels and onboard monitoring systems.
Potable-Water, Grey-Water, Bilge & Holding-Tank Monitoring

Potable-Water, Grey-Water, Bilge & Holding-Tank Monitoring

Utility and waste-system tanks require dependable monitoring to support vessel operations, crew safety and environmental compliance. NOSHOK and KING-GAGE provide level gauging, indication and hydrostatic measurement technologies suitable for fresh water, grey water, bilge and holding-tank applications across marine vessels.

Challenge NOSHOK Solution Purpose
Continuously monitoring potable-water and utility-service tank levels

Single and multiple tank indication / measurement platforms (contact NOSHOK for technical assistance)

Provides centralized visibility into freshwater and service-tank levels for routine onboard operation.
Monitoring grey-water, bilge and holding-tank conditions

Hydrostatic downpipe sensing systems and D/P Purge Control, Hydrostatic Level Transmitters (Submersible Level Transmitters or Cage-Protected Submersible Level Transmitters), or a High Accuracy Fixed Range Transmitter mounted externally on the tank

Delivers dependable measurement for utility and waste-system tanks where continuous monitoring is needed.
Providing quick local visual status for critical utility tanks

LevelBAR Electronic Column Indicator

Improves local recognition of changing tank conditions and supports faster operator response.
Supporting onboard air quality for pneumatic marine gauging systems

Air-Guard Bronze 20 SCFM Filter,  Air-Guard Bronze Air Control Station 20 SCFM and 60 / 80 / 100 SCFM Filters

Helps maintain clean, dry instrument air and supports reliable long-term operation of pneumatic systems.
NOSHOK Control Panel Instrumentation For Marine Vessels

NOSHOK Control Panel Instrumentation For Marine Vessels

Modern marine operations rely on clear, consolidated control panels to monitor tank levels, draft conditions and critical utility systems from the bridge, engine room or centralized control stations. NOSHOK and KING-GAGE control panel instrumentation brings together indicators, transmitters, switches, valves and air-management components into robust assemblies designed for challenging marine environments. These panels help crews see key process values at a glance, streamline alarm and interlock functions, and simplify maintenance and troubleshooting across ballast, fuel, water and vessel-management systems.

Challenge NOSHOK Solution Purpose
Combining multiple tank and draft measurements into a single marine control panel

Tank Level Measurement System (contact NOSHOK for technical assistance), Multiple Tank Indicator With Optional Set Point Controller (contact NOSHOK for technical assistance)

Provides centralized visibility of ballast, fuel, water and draft conditions to support faster, better-informed vessel decisions.
Interfacing marine instrumentation with existing shipboard monitoring and automation systems

KING-GAGE Level Transmitters and Differential Pressure Purge Control Level Transmitters

Enables seamless connection to vessel management, PLC and alarm systems through standard electronic outputs and hydrostatic measurement methods.
Managing pneumatic and hydrostatic level signals for downpipe and purge-control systems

Differential Pressure Purge Control Level Transmitter, KING-GAGE Bronze Marine Filters, and Bronze Air Control Stations

Provides organized, serviceable control of instrument air and hydrostatic signals for reliable tank and draft measurement.
Reducing installation time and wiring complexity for newbuilds and retrofit projects

Pre-engineered approach using KING-GAGE Tank Level Measurement System (contact NOSHOK for technical assistance), Multiple Tank Indicators (contact NOSHOK for technical assistance), Hydrostatic Level Transmitters (Submersible Level Transmitters, Cage-Protected Submersible Level Transmitters), Differential Pressure Purge Control Level Transmitter, and NOSHOK Instrument Valves 

Shortens installation time, reduces field wiring errors and simplifies commissioning on marine vessels.
Supporting long-term reliability in corrosive, high-vibration marine environments

Wide range of 316 Stainless Steel Pressure Gauges and Pressure Transmitters, KING-GAGE Bronze Marine Filters, and KING-GAGE Level Transmitters 

Improves long-term durability of instrumentation, reducing unplanned downtime and maintenance in demanding shipboard conditions.
Providing convenient access for calibration, isolation and maintenance

NOSHOK Needle & Manifold Valves, block and bleed valves

Simplifies calibration and service while helping crews work safely and efficiently on critical measurement points.

Products & Solutions

Tank Level Measurement For Marine Vessels

Tank Level Measurement For Marine Vessels

KING-GAGE tank level measurement systems are engineered for long-term performance in demanding marine environments, from ballast-water service to utility and service tanks. They provide continuous real-time measurement, graphical multi-tank visibility and dependable operation for a wide range of vessel applications.

Equipment: Tank Level Measurement System

Application: Ballast tanks, service tanks, marine vessel system management and vessel draft monitoring.

Purpose: To provide continuous real-time tank-level and draft visibility across marine systems for improved vessel awareness and operational control.

LP3 Tank Level Measurement System
  • Continuous real-time measurement supports better visibility across multiple onboard tanks
  • Graphical tank display helps operators manage ballast, service and utility systems more efficiently
  • Centralized system architecture reduces reliance on manual soundings and scattered local checks
  • Suitable for vessel-management applications requiring multi-tank awareness and coordinated operation
  • Supports service, ballast and draft applications from a common platform
Multiple-Tank Indication For Marine Applications

Multiple-Tank Indication For Marine Applications

KING-GAGE multiple-tank indicators provide practical, centralized readout for marine tanks and draft points where operators need compact, dependable visibility. They are well suited for ballast water, fuel oil, potable water and other shipboard utility applications.

Equipment: Multiple Tank Indicator

Application: Ballast water, fuel oil, potable water and draft measurement requiring centralized multi-point indication.

Purpose: To provide compact, readable tank-level and draft indication that improves onboard awareness and supports everyday marine operations.

4640 Series LP2 Single Tank Level Indicator
4641 Series LP2 Multiple Tank Indicator With Optional Set Point Controller
  • Compact multiple-channel indication supports bridge, engine-room and control-room use
  • Practical for marine utility systems where several tanks must be monitored from one location
  • Can support set point control in applications requiring alarm or threshold functionality
  • Reduces time spent checking individual tanks manually
  • Supports cleaner system organization in vessels with multiple service and utility tanks
Hydrostatic Level & Draft Measurement In Marine Systems

Hydrostatic Level & Draft Measurement In Marine Systems

KING-GAGE hydrostatic and purge-control solutions provide dependable measurement for marine tanks and draft-monitoring points using downpipe and differential-pressure techniques. These solutions are suited for onboard environments where proven hydrostatic gauging methods are preferred.

Equipment: D/P Purge Control, hydrostatic downpipe sensing systems, submersible and intrinsically safe submersible level transmitters

Application: Ballast tanks, service tanks, utility tanks and ship's draft measurement.

Purpose: To provide stable hydrostatic level and draft data for monitoring, indication and integration into marine systems.

788 Series Differential Pressure Purge Control Level Transmitter
612 Series Submersible Level Transmitters
613 Series Cage-Protected Submersible Level Transmitters
627 Series Intrinsically Safe Submersible Liquid Level Transmitters
  • Supports hydrostatic measurement of liquid level in marine tanks
  • Provides electronic output for indication and system integration
  • Suitable for ship's draft measurement as part of broader vessel awareness
  • Compatible with centralized monitoring and indication architectures
  • D/P Purge Control (788) provides a dependable option for marine applications using established downpipe gauging methods
  • Hydrostatic level transmitters (612, 613, 627) provide various optional outputs to the control system
Visual Indication & Marine Vessel Management

Visual Indication & Marine Vessel Management

KING-GAGE indication platforms help operators see tank-level conditions quickly and manage vessel systems more effectively. These products support graphical display, process indication and system-wide visibility across ballast, service and utility applications.

Equipment: Electronic Column Indicator, Process Indicators

Application: Tank level, draft monitoring and vessel management for ballast water, fuel oil, fresh water, lube oil, brine, preload and holding applications.

Purpose: To improve visibility, speed operator recognition and support centralized marine monitoring.

5111 Series LevelBAR Electronic Column Indicator
4640 Series LP2 Single Tank Level Indicator
4641 Series LP2 Multiple Tank Indicator With Optional Set Point Controller
LP3 Tank Level Measurement System
  • Bright visual indication helps operators recognize changing level conditions quickly
  • Useful in local panels and centralized system layouts
  • Supports a wide range of marine tank applications from ballast to holding tanks
  • Improves operator awareness during normal operation and critical alert events
  • Complements broader vessel-management systems with clear, readable indication
Marine Filters, Air Sets & Support Components

Marine Filters, Air Sets & Support Components

KING-GAGE marine filters and air-control components support the reliable operation of pneumatic marine gauging systems by helping maintain clean, dry instrument air. These products are engineered for marine environments and support long-term serviceability.

Equipment: Bronze Marine Filters, Bronze Air Control Stations, 60 / 80 / 100 SCFM Filters

Application: Instrument-air filtration and conditioning for marine level and draft gauging systems.

Purpose: To protect pneumatic measurement components, improve system reliability and support stable long-term marine operation.

9313 Series Air-Guard Bronze 20 SCFM Filter
72/74 Series Air-Guard Bronze Air Control Station 20 SCFM
High Purity Compressed Air Filters
  • Provides filtered, dry air to pneumatic marine gauging systems to help stabilize system performance by reducing moisture and contamination
  • Supports longer service life and lower maintenance for air-handling components
  • Rugged marine-oriented construction suits demanding onboard environments
  • Supports reliable operation of hydrostatic and purge-control measurement systems

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Resources

Marine

Frequently Asked Questions

A: Marine level and draft instrumentation is used across a range of onboard tanks and measurement points, including ballast tanks, fuel-oil tanks, lube-oil tanks, service and day tanks, potable-water tanks, grey-water and sewage holding tanks, and bilge tanks, as well as draft monitoring at the bow and stern. These measurements support vessel stability, safe loading and unloading, equipment protection, environmental compliance, and efficient onboard operations through both continuous level monitoring and draft verification.

A: Ballast-tank level monitoring is essential for maintaining safe operating conditions, vessel trim and transverse stability throughout a voyage. Accurate ballast-level data also supports ballast-water management procedures and helps crews make informed loading and discharge decisions.

A: Draft measurement provides operators with continuous information about how deeply a vessel sits in the water at the bow and stern. This helps support safe navigation, loading compliance, trim optimization and fuel efficiency by ensuring the vessel is operating within intended draft limits.

A: Real-time tank-level monitoring gives operators immediate visibility into ballast, service and utility tank conditions without relying on manual soundings. This improves operational awareness, reduces time spent on routine checks and helps crews respond faster to abnormal tank conditions or alarm events.

A: Centralized tank indication allows operators to view multiple tank levels and draft conditions from a bridge, control room or engine room display. This simplifies vessel monitoring, improves response time and helps crews manage ballast, service fluids and stability conditions more efficiently.

A: Electronic level and draft systems provide continuous measured data directly to indicators and control interfaces, reducing the need for manual checks at each tank. This can improve crew safety by limiting access to confined or difficult-to-reach spaces while also saving time during routine operations.

A: Important factors include the type of liquid being measured, tank geometry, vessel motion, temperature variation, required indication points, alarm needs and compatibility with shipboard control systems. Environmental conditions such as vibration, moisture and corrosive atmospheres should also be considered.

A: Continuous tank-level monitoring helps prevent low-level conditions that could starve pumps, engines or generators of required fluids. It also helps avoid overfill situations, supports orderly transfer operations and improves overall visibility into onboard fluid management.

A: Tank-level and draft data provide the information needed to coordinate ballast adjustments, monitor cargo effects on trim and maintain vessel stability throughout loading and unloading operations. Reliable measurement helps operators make faster, better-informed decisions during changing operating conditions.

A: Yes. Modern marine measurement systems can provide signals to centralized displays, alarm panels and vessel management or automation systems. This supports more efficient monitoring, better recordkeeping and improved coordination across onboard systems.

A: Useful application details include the type of tank, liquid properties, tank dimensions, expected operating range, mounting location, alarm requirements, desired indication points and any needed integration with onboard control systems. Clear application information helps ensure the selected solution fits the vessel and operating environment.

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