SEANAV MARINE

Comprehensive Engineering Scope

Complete Marine Maintenance, Service & Repair Departments

Seanav Marine operates dedicated mobile technical squads and workshop facilities from Dubai Maritime City, delivering 24/7 technical boarding, riding squads, workshop overhauls, statutory inspections, and emergency repairs across all 28 specialized marine maintenance departments.

📢 Statutory & Class Approval: Our partnered companies are authorised with all major class to carry our Radio GMDSS SRT Survey onboard vessel. Covering all 12 IACS member societies and recognized Non-IACS registers worldwide.

Explore the 5 Marine Engineering Divisions:



Division 1: Navigation, Communication & Shipboard IT

Bridge electronics, satellite connectivity, digital charts, and maritime cybersecurity.

01. Marine NavCom

Core Bridge

Full bridge navigation and radio communication electronics maintenance and repairs:

  • Radar & ARPA (magnetron replacement, tuning, display repair)
  • Gyrocompass (overhaul, sphere renewal, fluid change, calibration)
  • Autopilot & steering control systems
  • ECDIS (hardware, display monitors, operating system repair)
  • Integrated Bridge Systems (IBS), speed log & echo sounder
  • GMDSS consoles, VHF / MF / HF radios & DSC controllers
  • EPIRB, SART & AIS Class A transponders
  • VDR & S-VDR Annual Performance Tests (APT)

11. Charts & Publications

Nautical

Official electronic navigational charts, licensing, and statutory publications:

  • Electronic Navigational Charts (ENC) & AVCS chart permits
  • ECDIS chart management & S-57 / S-63 data updates
  • Admiralty Digital Publications (ADP, AENP)
  • Paper nautical charts, block corrections & Notices to Mariners
  • Mandatory IMO, SOLAS, MARPOL, and STCW publication libraries
  • Flag-State specific maritime circulars and official logbooks

12. Airtime & Satellite Comms

Connectivity

High-speed offshore internet, satellite airtime, and antenna systems:

  • Starlink Maritime high-speed antenna supply, mounting & integration
  • Marine VSAT, Inmarsat Fleet Xpress & FleetBroadband systems
  • Above Deck Units (ADU), BDU, BUC, and LNB servicing
  • Antenna tracking calibration, gyro stabilization, and azimuth tuning
  • TVRO satellite entertainment distribution systems
  • Global satellite SIM provisioning, VoIP, and bandwidth management

28. Shipboard IT & Cybersecurity

Network & Security

Vessel IT infrastructure, OT/IT network segmentation, and IMO cyber compliance:

  • Compliance with IMO MSC.428(98) and IACS UR E26 / E27 requirements
  • Industrial network switches, marine routers, and hardware firewalls
  • OT (Bridge/Engine) vs. IT (Crew/Business) VLAN segmentation
  • Captive portal onboard Wi-Fi systems and bandwidth allocation
  • Endpoint security, automated server backups, and disaster recovery



Division 2: Automation, Electrical & Control Systems

Engine room automation, power distribution, switchboards, and sensor calibrations.

02. Automation & Control

IAS / PMS

Marine integrated automation systems, monitoring, and control loops:

  • Alarm, Monitoring & Control Systems (AMCS / AMS)
  • PLC systems (Siemens S7, Schneider, Omron, Mitsubishi, WAGO)
  • Analog & digital I/O module fault diagnostics and replacements
  • Power Management Systems (PMS): auto-sync, load sharing, blackout recovery
  • Electronic and hydraulic governors & actuator linkages
  • Remote Valve Operating Systems (RVOS) & Hydraulic Power Units (HPU)

13. Electrical Systems

Power

Marine power generation, switchgear, distribution, and protection:

  • Main Switchboard (MSB) & Emergency Switchboard (ESB) servicing
  • Air Circuit Breakers (ACB) and HV vacuum breaker secondary injection testing
  • Generator alternators, automatic voltage regulators (AVR), and insulation tests
  • Motor Control Centers (MCC), starters, and soft starter overhauls
  • Class-approved marine battery banks, chargers, and UPS emergency systems
  • Shore connection panels and earth fault troubleshooting

26. Calibration & Testing

Instrumentation

Traceable precision instrument calibration and statutory verification:

  • Pressure calibrators, deadweight testers, and temperature dry-wells
  • Portable & fixed gas detectors (O₂, LEL, H₂S, CO) calibration with span gases
  • Shaft power and optical torque monitoring system recalibration
  • Magnetic compass calibration & deviation card issuance by licensed adjusters
  • Overload relays, reverse-power, and generator safety trip testing



Division 3: Safety, LSA, FFA & Statutory Compliance

SOLAS life-saving appliances, firefighting systems, and IACS class inspections.

03. LSA — Life-Saving Appliances

SOLAS

Annual and 5-year statutory inspection, testing, and recertification:

  • Lifeboats & rescue boats: hull, engine, release gear & load tests
  • Davit winches, wire ropes, brake pads, and dynamic overload testing
  • Inflatable liferaft servicing and hydrostatic release unit (HRU) checks
  • Immersion suits, lifejackets, and personal transfer baskets
  • SCBA and EEBD breathing apparatus pressure testing and air refilling

04. FFA — Fire-Fighting Appliances

Fire Safety

Fixed extinguishing systems, portable units, and detection loops:

  • Fixed high-pressure CO₂ systems (cylinder weighing, manifold hydrostatic tests)
  • High-expansion and low-expansion foam systems & annual foam analysis
  • Water mist, deep-fat fryer, and paint locker fire suppression systems
  • Portable & semi-portable extinguishers (dry powder, foam, CO₂, wet chemical)
  • Addressable fire alarm panels, smoke, heat, and flame detector loops

25. Class & Statutory Support

IACS & Flag

Annual, intermediate, and special survey attendance & pre-audits:

  • GMDSS Radio Surveys (SRT): Authorized partner support for all 12 IACS societies
  • Safety Equipment (SEQ) & Safety Radio certificates pre-survey health checks
  • Transfer of Class (PR1A) & Non-IACS conversion (PR1C) compliance surveys
  • Port State Control (PSC) deficiency rectification & flag state clearances



Division 4: Propulsion, Engines & Mechanical Systems

Workshop and afloat heavy mechanical maintenance, overhauls, alignment, and machining.

05. Marine Main Engines

Heavy 2-stroke and 4-stroke propulsion engine riding squads and workshop overhauls:

  • Major & top-end overhauls, decarbonization, cylinder head reconditioning
  • Piston extraction, ring groove re-machining, and crown cleaning
  • Cylinder liner internal diameter calibration, wave-cut honing, and ridge removal
  • Crosshead, crankpin, and main bearing inspection & clearances
  • Crankshaft web deflection measurements and alignment analysis

06. Auxiliary Engines / DGs

Shipboard diesel generator mechanical and electrical scheduled overhauls:

  • Top-end (8,000h) and major (16,000h / 24,000h) generator engine overhauls
  • Cylinder head pressure testing, valve seat grinding, and valve guide replacement
  • Piston connecting rod alignment, bush replacement, and big-end bearings
  • Makers: Yanmar, Daihatsu, MAN B&W, Wärtsilä, Caterpillar, Bergen

07. Turbochargers

Complete overhaul, dynamic balancing, and cartridge refurbishment:

  • Rotor dynamic balancing, shaft crack detection, and runout inspection
  • Floating and journal bearing renewals, labyrinth seal replacements
  • Nozzle ring cleaning, turbine blade bead blasting, compressor wheel profiling
  • ABB (VTR, TPL, TPS), MAN (TCA, TCR), and Mitsubishi (MET) support

08. Fuel Oil Systems

High-pressure injection equipment, fuel conditioning, and purifiers:

  • High-pressure fuel injection pump overhaul, plunger/barrel lapping
  • Fuel valve & injector testing (opening pressure, atomization spray pattern)
  • Fuel timing calibration, VIT adjustments, and electronic ME-C lubricators
  • Heavy fuel oil (HFO) pre-heaters, viscometers, and booster modules

09. Lubrication & Cooling

Plate heat exchangers, descaling, LO purifiers, and cooling loops:

  • Plate heat exchanger (Alfa Laval, Sondex, GEA) re-gasketing & chemical descaling
  • Central cooling water pumps, jacket water heaters, and thermostatic valves
  • LO purifier bowl dismantling, balancing, and disc stack chemical cleaning

View Heat Exchanger Services →

10. Shaft Line & Propulsion

Tailshaft, stern tube seals, propeller, and intermediate shafting:

  • Stern tube seal bonding, liner chrome-plating, and Simplex seal overhauls
  • Propeller blade polishing, cavitation repair, and pitch mechanism checks
  • Intermediate shaft bearings, thrust bearing inspection, and optical laser alignment
  • Controllable Pitch Propeller (CPP) OD box overhaul and hydraulic distribution

14. Pumps & Auxiliary Machinery

Centrifugal, positive displacement, screw, and gear pump overhauls:

  • Main bilge, ballast, general service, fire, and GS pump mechanical overhauls
  • Shaft line dynamic balancing, wear ring re-machining, and bearing fitting
  • Mechanical seal replacements, gland packing renewals, and alignment
  • Makers: Taiko Kikai, Shinko, Teikoku, Desmi, Allweiler, Iron Pump

15. Valves & Piping

Marine valve overhaul, seat lapping, pressure testing, and pipe spooling:

  • Sea chest valves, storm valves, overboard discharges, and ballast valves
  • Hydraulic and pneumatic remote-operated valve (ROV) actuator rebuilding
  • Safety relief valve calibration, bench testing, and class stamping
  • Prefabrication of galvanized, CuNiFe, and carbon steel pipe spools

23. Deck Machinery

Windlasses, mooring winches, cargo cranes, and hatch covers:

  • Anchor windlass brake lining relining, dog clutch & gypsy gear overhauls
  • Mooring winch hydraulic motor, planetary reduction gearbox, and spooling gear
  • Provision crane and cargo crane hydraulic cylinder repacking & wire renewals
  • Hatch cover hydraulic cylinders, cleating wedges, and rubber packing

24. Hull & Mechanical Repair

Afloat steel renewal, certified welding fabrication, and structural repairs:

  • Class-certified hull steel crop and renewal in cargo holds and ballast tanks
  • Watertight door dogs, quick-acting cleats, and rubber gasket replacements
  • Manhole cover machining, fairlead roller rebuilding, and bollard reinforcements
  • Under-water and afloat temporary/permanent insert welding repairs



Division 5: Auxiliary, Environmental & Hotel Systems

Boilers, water generation, environmental MARPOL equipment, HVAC, and cargo controls.

16. Boiler & Steam Systems

Auxiliary and exhaust-gas economizers, burners, and combustion management:

  • Burner Management Systems (BMS) logic testing and flame scanner alignment
  • Fuel modulation valves, atomizing steam control, and ignition electrodes
  • Feedwater pumps, level gauge glasses, and cascade tank controls
  • Boiler tube inspection, plug fittings, and hydrostatic pressure testing

17. Incinerator Systems

Marine waste oil and garbage incinerator plant servicing & refractory:

  • Primary & secondary burner servicing, nozzle renewals, and flame safeguards
  • Refractory brick relining, high-temp castable repairs, and door insulation
  • Combustion chamber pressure draft transmitters and flue gas fan overhauls

View Incinerator Services →

18. Fresh Water Generator (FWG)

Vacuum distillation and reverse osmosis marine potable water makers:

  • Evaporator and condenser plate pack chemical cleaning and descaling
  • Air and brine ejector nozzle machining, vacuum leak testing
  • Distillate water pump mechanical seals and salinity sensor calibration
  • Alfa Laval (Nirex), Sondex, and Sasakura fresh water generators

19. OWS & Environmental Systems

MARPOL Annex I pollution prevention compliance equipment:

  • 15 ppm bilge alarm calibration, certificate issuance & cell cleaning
  • Oily Water Separator coalescer filter bed and oil discharge automation
  • Oil Discharge Monitoring Equipment (ODME) for tankers
  • Automatic stopping devices and 3-way discharge diversion valve testing

20. Ballast Water Management (BWTS)

D-2 standard ballast water treatment plant commissioning and maintenance:

  • Automatic self-cleaning backwash screen and candle filter overhauls
  • UV lamp, wiper motor, quartz sleeve, and ballast sensor replacements
  • Electrolysis / electro-chlorination cell and Total Residual Oxidant (TRO) calibration
  • Commissioning biological testing assistance and class survey verification

21. Cargo & Tank Systems

Tanker and gas carrier cargo pumping, monitoring, and manifold systems:

  • Submerged deep-well cargo pump (Framo-type) hydraulic motor and seal repairs
  • Radar tank gauging, electro-pneumatic level transmitters, and high-level alarms
  • Vapor recovery, cargo manifold pressure sensors, and temperature probes
  • Inert Gas Systems (IGS) oxygen analyzers and scrubber seal valves

22. Refrigeration & HVAC

Provision store refrigeration, cargo chilling, and accommodation AC plants:

  • Marine compressor overhauls (Carrier, Bitzer, Sabroe, Daikin, Bock)
  • Water chillers, AHU fan motor balancing, and expansion valve calibration
  • Refrigerant leak detection, recovery, and ecological charging

View HVAC & Reefer Services →

27. Spare Parts & Technical Supply

OEM ship spares, reconditioned exchange units, and rapid launch delivery:

  • Main & auxiliary engine liners, pistons, injectors, and turbocharger rotors
  • Reconditioned gyro elements, radar magnetrons, and automation PLCs
  • 24/7 harbor launch delivery to Dubai, Fujairah, Suez, and global ports

View Spares & Supply Scope →



Exhaustive Scope Directory

Complete Marine Equipment, Systems & Service Index

Seanav Marine maintains specialized tooling, genuine spares procurement, and authorized riding engineers for every critical system onboard commercial vessels, tankers, bulkers, container ships, and offshore units.

Navigation & Bridge Equipment
Dept 01

  • Navigation & Bridge Equipment (Integrated Bridge Systems – IBS)
  • GMDSS & Radio Communication (MF/HF, VHF DSC, Inmarsat-C, NBDP)
  • ECDIS & Digital Navigation (Dual ECDIS setups, sensor integration)
  • VDR / S-VDR (Annual Performance Testing – APT, capsule retrieval)
  • Gyrocompass & Autopilot (Sphere overhauls, adaptive steering)
  • Radar & ARPA (X-band, S-band, magnetron replacement & tuning)
  • Echo Sounder & Speed Log (Transducer & gate valve attendance)
  • AIS (Automatic Identification System Class A transponders)
  • BNWAS (Bridge Navigational Watch Alarm System sensors & resets)
  • GPS / GNSS (Differential GPS receivers & heading sensors)
  • Weather / Meteorological Equipment (Anemometers, barometers, fax)
  • Magnetic Compass (Binnacle servicing, Flinders bars & spheres)
  • Signal & Navigation Lights (Lantern controllers & Aldis lamps)

Automation & Control Systems
Dept 02

  • Automation & Control Systems (Integrated Automation – IAS)
  • PLC / SCADA (Siemens, Schneider, Omron, WAGO logic debug)
  • Alarm & Monitoring Systems (AMS / AMCS / ERAMS)
  • Power Management Systems (PMS) (Sync, load sharing, blackout)
  • Engine Automation (Remote control, slow turning, shutdown logic)
  • Cargo Automation (Cargo monitoring, manifold control consoles)
  • Tank Gauging (Radar, electro-pneumatic, hydrostatic transmitters)
  • Valve Remote Control Systems (VRCS) (Hydraulic / pneumatic)
  • Pneumatic & Hydraulic Systems (Actuators, solenoid banks, HPUs)
  • Boiler Automation (Burner modulation, flame scanners, level alarms)
  • Incinerator Automation (Chamber temp control, sludge dosing logic)
  • Governors (Woodward, Nabtesco, Europa hydraulic & electronic)

Propulsion & Heavy Machinery
Depts 05-10

  • Main Engines (2-stroke & 4-stroke MAN B&W, WinGD, Sulzer, Wärtsilä)
  • Engine Overhauling (Cylinder heads, pistons, liners, bearings)
  • Auxiliary Engines / Generators (Yanmar, Daihatsu, Caterpillar, Bergen)
  • Turbochargers (Rotor dynamic balancing, bearings, nozzle rings)
  • Fuel Injection Equipment (Pumps, injectors, lapping, calibration)
  • Shaft Line & Propulsion (Tailshaft withdrawal, laser alignment)
  • Propellers (Blade polishing, pitch mechanism overhauls, repairs)
  • Stern Tube Systems (Simplex seals, white-metal bearings, chrome liners)
  • Pumps (Centrifugal, screw, gear, ballast, bilge, boiler feed)
  • Compressors (Main starting air, working air, control air)
  • Purifiers / Separators (Alfa Laval, Westfalia, Mitsubishi bowls)
  • Engine Spare Parts (Liners, rings, valves, bearings, gaskets)

Auxiliary, HVAC & Environmental
Depts 09, 16-22

  • Heat Exchangers (Plate coolers, shell & tube, ultrasonic descaling)
  • Fresh Water Generators (FWG) (Plate distillation, Reverse Osmosis)
  • Boilers (Auxiliary steam boilers, exhaust gas economizers)
  • Incinerators (Burner tuning, refractory brick relining, chambers)
  • Refrigeration & HVAC (Provision plants, AC chillers, AHU overhauls)
  • Ballast Water Management Systems (BWTS) (UV / filtration, TRO)
  • OWS / 15-ppm Systems (Coalescers, bilge alarms, ODME)
  • Tank Cleaning & Sludge Services (Sludge transfer, desludging)

Electrical Systems & Power
Dept 13

  • Electrical Systems (Surveys, thermal imaging, earth fault tracking)
  • Generators & Alternators (Rewinding, AVR calibration, diode tests)
  • Switchboards (Main MSB, Emergency ESB, ACB injection testing)
  • HV Systems (High-voltage switchgear, vacuum contactors, safety interlocks)
  • Transformers (Marine step-down, lighting & distribution transformers)
  • Motors & Starters (DOL, star-delta, soft starters, VFD drives)
  • UPS & Battery Systems (Emergency radio batteries, float chargers)
  • Emergency Power Systems (Blackout auto-start emergency generators)

Deck Machinery & Structural
Depts 15, 23-24

  • Deck Machinery (Mooring equipment, winches, fairleads, bollards)
  • Anchor Windlasses (Brake relining, gypsy gear, clutches, hydraulic motors)
  • Mooring Winches & Capstans (Brake holding tests, tension controls)
  • Deck Cranes (Provision, hose, cargo cranes, wire rope renewals)
  • Hatch Covers (Hydraulic cylinders, rubber seals, cross-joint cleats)
  • Hydraulic Power Packs (Proportional valves, pump overhauls, flushing)
  • Ship Repair & Steel Repairs (Afloat hull inserts, double bottom renewals)
  • Pipe Fabrication & Repair (Spool prefabrication, CuNiFe, ERW, seamless)
  • Welding & Machining (Class-certified 6G welders, portable line boring)

Safety, LSA & FFA
Depts 03 & 04

  • LSA — Life-Saving Appliances (SOLAS annual / 5-year certifications)
  • Lifeboats & Rescue Boats (Engine overhauls, hull GRP, water bag tests)
  • Liferafts (Servicing, annual inflation tests, HRU renewals)
  • Davits & Release Gear (On-load / off-load release hooks, dynamic load tests)
  • Immersion Suits & Lifejackets (Pressure tests, lights, whistles)
  • SCBA / EEBD (Hydrostatic cylinder tests, breathing air refilling)
  • FFA — Fire-Fighting Appliances (Complete shipboard fire safety gear)
  • Fire Extinguishers (Dry powder, CO₂, foam, wet chemical recharges)
  • Fire Pumps & Emergency Fire Pumps (Discharge pressure, suction checks)
  • Fire Hydrants & Hoses (Couplings, nozzle spray/jet, pressure tests)
  • Fixed CO₂ Systems (Cylinder ultrasonic weighing, manifold lines)
  • Foam Systems & Water-Mist Systems (High/low expansion, nozzle tests)
  • Fire Detection & Alarm Systems (Smoke, heat, flame detectors, control panel)
  • Gas Detection (Portable multi-gas monitors, fixed pump room systems)
  • Emergency Equipment (Safety harnesses, embarkation ladders, stretcher)

Nautical Data, Satcom & Cyber
Depts 11, 12, 28

  • Charts & ENC / AVCS (Admiralty Vector Chart Service permits & updates)
  • Admiralty Publications (ADP, AENP, List of Lights, Radio Signals)
  • IMO / SOLAS / MARPOL Publications (Latest mandatory amendments)
  • Satellite / Airtime / VSAT (Starlink Maritime, Inmarsat, Fleet Xpress)
  • Cybersecurity & Shipboard IT (IMO MSC.428(98), IACS UR E26/E27)
  • Network Infrastructure & Operational Network (VLAN bridge/engine/crew)
  • Crew Wi-Fi & Captive Portals (Bandwidth management, vouchers)
  • Firewall / Security & Antivirus (Hardware UTM appliances, hardening)
  • Server & Computer Systems (Industrial marine PCs, bridge display units)
  • Software / Firmware Updates (ECDIS OS, radar software, firmware patches)
  • Telemedicine / Crew Welfare Connectivity (Remote health link, VoIP)

Testing, NDT & Diagnostics
Dept 26

  • Calibration & Instrumentation (NIST/UKAS traceable certifications)
  • Pressure / Temperature / Flow / Level Instruments (Transmitters, gauges)
  • Electrical Testing (Insulation resistance, ACB secondary injection, thermal)
  • Safety Equipment Testing (Relief valves, alarms, emergency shutdowns)
  • Condition Monitoring & Predictive Maintenance (Scheduled asset health)
  • Vibration Analysis (Rotating machinery, turbines, motors, bearing health)
  • Thermography (Infrared scanning of MSB, electrical cabinets, lagging)
  • Oil Analysis (Lube oil viscosity, flash point, water content, wear metals)
  • Ultrasonic Testing (UTM) & NDT (Hull plate thickness, weld inspection)

Surveys, Drydock & Service Modes
Depts 24 & 25

  • Class Survey Support (All 12 IACS societies + authorized Non-IACS registers)
  • Flag-State & Port-State Inspection Support (PSC deficiency closure)
  • Annual / Intermediate / Special Survey Support (5-year cycle attendances)
  • Drydock Services & Afloat Ship Repair (Supervision, riding squads, docking)
  • Mechanical, Electrical, Automation & Electronics Repairs (Full spectrum)
  • Riding Squad / Service Engineers (Global sea voyages, drydocks, anchorages)
  • Onboard Troubleshooting & Remote Support (24/7 technical assistance)
  • Installation, Commissioning, Testing & Commissioning (Turnkey delivery)
  • Annual Maintenance Contracts (AMC) (Preventive & corrective maintenance)
  • Technical Management Support & Certification (Class/flag documentation)

Procurement, Stores & Chandlery
Dept 27

  • OEM Spare Parts & Non-OEM / Equivalent Spares (Genuine & high-grade)
  • Consumables & Emergency Spare Delivery (24/7 port launch delivery)
  • Marine Procurement & Technical Stores Supply (IMPA / ISSA catalogue)
  • Ship Chandlery (Deck, engine, electrical, safety, cabin stores)
  • Safety Stores & PPE (Coveralls, helmets, safety boots, gas meters)
  • Electrical Stores (Marine cables, circuit breakers, relays, fuses, lamps)
  • Engine Stores (Filters, lubricants, mechanical packings, joint sheets)
  • Navigation Stores (Nautical instruments, flags, log sheets, plotting tools)
  • Deck Stores (Mooring lines, wires, shackles, paint, pneumatic tools)

Underwater, Diving & Husbandry
Husbandry

  • ROV / Underwater Inspection (CCTV live video feeds, sea chest grates)
  • Diving Services & Underwater Hull Inspection (IACS-approved UWILD)
  • Propeller Inspection & Hull Cleaning (Hydraulic brush karts, polishing)
  • Tank Cleaning & Sludge / Waste Services (Slops disposal, gas-free certs)
  • Bunkering Support & Fresh Water Supply (Offshore barge / launch delivery)
  • Launch / Boat Services (Crew change, technician boarding, stores delivery)
  • Port Agency / Husbandry Services (Customs, immigration, port captaincy)

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