🛑 engine shutdown & slowdown systems

Engine Shutdown
& Slowdown Systems

ESD · Overspeed Trip · Auto Slowdown · Safety Interlocks · Emergency Stop — Complete service, repair, calibration and retrofitting for all vessel types. Our experienced team (20+ years) specializes in MAN, Wärtsilä, Sulzer, MAK, Caterpillar, MTU and more.

Request service Contact engineers

950+
shutdown systems projects

20+
years experienced team

OEM
trained specialists

24/7
emergency response

🔧 experienced team – since 2003

Specialized in emergency shutdown, overspeed trip, automatic slowdown, safety interlock systems for main engines, auxiliary engines and generators.

Our engineers have extensive hands-on experience with MAN B&W, Wärtsilä, Sulzer, MAK, Caterpillar, MTU, Yanmar, Daihatsu, Niigata, ABC, Bergen, Deutz and more.

🛑 emergency shutdown (esd)

Main Engine · Auxiliary · Generator ESD

✓ Main Engine Emergency Shutdown Systems
✓ Auxiliary Engine ESD Systems
✓ Generator Engine Shutdown Systems
✓ Emergency Generator Shutdown
✓ Remote Shutdown Stations – Bridge, ECR, Local
✓ ESD Pushbuttons & Pull Cables
✓ Fuel Shutoff Valves – Manual & Pneumatic
✓ Air Shutoff Valves – Starting Air & Scavenge Air
✓ MAN B&W ESD Systems – MC, ME, ME-C, ME-B, G-type
✓ Wärtsilä ESD Systems – RT-flex, X-series, RTA, 20-50DF
✓ Sulzer RTA ESD Systems
✓ MAK / Caterpillar ESD Systems – M20, M25, M32, M43, 3500, 3600

⚡ overspeed trip systems

Overspeed Protection · Trip Devices · Calibration

Overspeed Protection Systems

✓ Mechanical Overspeed Trip Devices – Woodward, Heinzmann, Regulateurs Europa
✓ Electronic Overspeed Protection – Woodward ProTech, 2301, TG series
✓ Overspeed Trip Valves – UG, PG, PSG series
✓ Speed Switches & Relays – Ifm, Pepperl+Fuchs, Turck, Banner
✓ Magnetic Pickup Sensors – Speed sensing
✓ Proximity Switches – Inductive, Hall-effect
✓ Overspeed Testing & Calibration – Under load & no load

Manufacturer-Specific Systems

✓ Woodward ProTech 203, 210, 230 Overspeed
✓ Heinzmann Electronic Overspeed Governors
✓ Regulateurs Europa Overspeed Trip Units
✓ MAN B&W Overspeed Systems – ME engine protection
✓ Wärtsilä Overspeed Trip – UNIC / WECS systems
✓ Caterpillar ADEM Overspeed Protection
✓ MTU Overspeed – Series 4000, 8000
✓ Yanmar / Daihatsu Overspeed Systems

🐢 automatic slowdown systems

Engine Slowdown · Load Reduction · Derating

✓ Automatic Engine Slowdown Systems
✓ Load Reduction & Derating Systems
✓ High Temperature Slowdown – Bearing, Cylinder, Exhaust
✓ High Vibration Slowdown
✓ Low Oil Pressure Slowdown
✓ High Cooling Water Temp Slowdown
✓ Oil Mist Detection Slowdown – Pre-alarm before shutdown
✓ MAN B&W Slowdown Systems – ME engine protection logic
✓ Wärtsilä Slowdown – UNIC, WECS, CoCoS
✓ Sulzer RTA Slowdown Systems
✓ MAK / Caterpillar Slowdown Logic
✓ Programmable Slowdown Parameters – Custom settings

🔒 safety interlock systems

Startup Interlocks · Operational Safety · Permissives

Startup & Operational Interlocks

✓ Starting Air Interlock Systems
✓ Turning Gear Interlock – Prevent start with turning gear engaged
✓ Lube Oil Pressure Interlock – Pre-start & running
✓ Cooling Water Flow Interlock
✓ Fuel Valve Interlock – Fuel rack position
✓ Camshaft Position Interlock
✓ Overspeed Test Interlock – Safe testing mode

Manufacturer Interlock Systems

✓ MAN B&W Interlock Systems – MC, ME engine safety
✓ Wärtsilä Safety Interlocks – UNIC safety logic
✓ Sulzer RTA Interlock Systems
✓ MAK / Caterpillar Startup Permissives
✓ MTU Safety Interlocks – MCS, ECU systems
✓ PLC-Based Interlock Logic – Siemens, Mitsubishi, ABB

🔧 shutdown components & actuators

Fuel Valves · Air Valves · Solenoids · Actuators

Shutdown Valves & Actuators

✓ Fuel Shutoff Valves – Manual, Pneumatic, Hydraulic
✓ Air Shutoff Valves – Starting air, Scavenge air
✓ Solenoid Valves for Shutdown – ASCO, Norgren, Burkert, Parker
✓ Pneumatic Actuators – For valve operation
✓ Hydraulic Actuators – For fuel rack control
✓ Emergency Stop Pull Cables & Switches
✓ MAN B&W Shutdown Valves – Fuel valve, air valve
✓ Wärtsilä Shutdown Actuators – UNIC system

Sensors & Switches

✓ Pressure Switches – Lube oil, fuel, air
✓ Temperature Switches – Bearing, coolant, exhaust
✓ Level Switches – Oil sump, cooling water
✓ Speed Sensors – Magnetic, proximity, Hall-effect
✓ Position Sensors – Fuel rack, valve position
✓ Emergency Stop Pushbuttons – IP66, marine grade
✓ Safety Relays & Logic Modules – Pilz, Ifm, Siemens

📟 shutdown control panels

ESD Panels · Alarm Annunciators · HMI

Control & Monitoring Panels

✓ Engine Shutdown Control Panels
✓ ESD Annunciator Panels – LED/LCD display
✓ Alarm & Shutdown Indication Units
✓ Local Operating Panels (LOP) – With shutdown functions
✓ Remote Shutdown Stations – Bridge, ECR, Accommodation
✓ HMI Integration for Shutdown Monitoring
✓ PLC-Based Safety Controllers – Siemens, Mitsubishi, ABB

Integration & Communication

✓ Integration with IAS / AMS – Alarm monitoring
✓ Modbus / Profibus Communication
✓ Ethernet/IP for Shutdown Data
✓ Remote Monitoring & Diagnostics
✓ Event Logging & Data Recording
✓ Class Survey Data Reporting – ABS, DNV, LR, BV, RINA

🔧 engine models & makes

Specific Models We Support

Two-Stroke Engines

✓ MAN B&W: MC, MC-C, ME, ME-B, ME-C, ME-GI, G-type (S35 to S90)
✓ Wärtsilä: RT-flex, X-series, RTA, RTA-T, RTA-C, X35 to X92
✓ Sulzer: RTA, RND, RND-M, ZA40 series
✓ Mitsubishi: UEC series (UEC37 to UEC85)
✓ Hitachi / HH / Doosan: B&W license engines

Four-Stroke Engines

✓ Wärtsilä: 20, 26, 32, 38, 46, 50DF, 34DF series
✓ MAN: L21/31, L23/30, L27/38, L32/40, L48/60, 175D, 32/44CR
✓ MAK: M20, M25, M32, M43, M453, M553 series
✓ Caterpillar: 3400, 3500, 3600, C280 series
✓ MTU: 4000, 8000, 1163 series
✓ Yanmar: EY, S165, S185, 6EY series
✓ Daihatsu: DK-20, DK-26, DK-28, DC-17, DC-32
✓ Niigata: 28AHX, 32AHX, 40AHX series
✓ ABC: DZ, DLZ, MDZ series
✓ Bergen: KRM, KRG, B-series, C-series
✓ Deutz / MWM / SKL / Pielstick

🔬 testing & calibration

Function Testing · Calibration · Certification

Testing Services

✓ ESD Function Testing – Full simulation
✓ Overspeed Trip Testing – Under load & no load
✓ Slowdown System Verification
✓ Safety Interlock Testing
✓ Emergency Stop Circuit Verification
✓ Valve Stroke Testing – Fuel shutoff, air shutoff
✓ Sensor & Switch Calibration
✓ Alarm & Shadow Testing – Without engine trip

Calibration & Certification

✓ Overspeed Device Calibration – Woodward, Heinzmann
✓ Speed Switch Calibration
✓ Pressure Switch Calibration
✓ Temperature Sensor Calibration – RTD, Thermocouple
✓ Class Survey Support – ABS, DNV, LR, BV, RINA, NK
✓ Calibration Certificates – Traceable standards
✓ Shutdown System Audit & Documentation

🔄 retrofit & upgrade

Modernize Obsolete Shutdown Systems

✓ Retrofit of Mechanical Overspeed to Electronic
✓ Upgrade Obsolete ESD Panels – New PLC-based systems
✓ Modernize Shutdown Logic – Replace relay logic with PLC
✓ Integration with Modern IAS / AMS
✓ Replace Obsolete Sensors & Switches – With new equivalents
✓ Retrofit Remote Shutdown Stations
✓ Add HMI for Shutdown Monitoring
✓ Upgrade to Meet Latest Class Requirements
✓ MAN B&W Shutdown Retrofit Kits
✓ Wärtsilä Shutdown System Upgrades

🚢 vessels we serve

Global Shutdown System Support

Vessel Types

✓ VLCC / ULCC Tankers
✓ Suezmax / Aframax
✓ Capesize / Panamax Bulk
✓ Container Vessels (Post-Panamax)
✓ LNG / LPG Carriers
✓ PSV / AHTS / OSV / MPSV
✓ Drilling Rigs / Semi-sub / Jack-up
✓ FPSO / FSO / FLNG Units
✓ Cruise Ships / Ro-Ro / Ferries
✓ Naval / Coast Guard Vessels
✓ Dredgers / Heavy Lift Vessels

Global Service Locations

✓ UAE (Dubai, Abu Dhabi, Fujairah)
✓ India (Mumbai, Kochi, Chennai, Kandla)
✓ Singapore
✓ Netherlands (Rotterdam, Amsterdam)
✓ Norway (Stavanger, Bergen, Oslo)
✓ USA (Houston, New Orleans, Seattle)
✓ Brazil (Rio de Janeiro, Santos)
✓ China (Shanghai, Hong Kong, Shenzhen)
✓ South Korea (Busan, Ulsan)
✓ Japan (Tokyo, Yokohama, Kobe)
✓ Middle East / Gulf Ports
✓ Worldwide Ports & Shipyards

🛑 24/7 engine shutdown emergency support

Need Engine Shutdown or Slowdown
System Service?

Our experienced shutdown system specialists (20+ years) provide complete troubleshooting, repair, calibration, and retrofitting for all marine engine shutdown and slowdown systems. Available 24/7 worldwide for emergency response.

Request service Emergency contact

Email: service@seanav.org | Web: www.seanav.org | 24/7 Emergency: +971 50 123 4567

Engine Shutdown
& Slowdown Systems