Marine & Offshore

Protect marine engines and
eliminate unplanned downtime at sea

At sea, a failed engine or sterntube bearing is not a maintenance inconvenience — it is a vessel out of service, a charter lost, and a tow bill arriving. FluidInspectIR® monitors oil condition continuously, pinpointing problems like water ingress and acid build-up before they cause irreversible damage.

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£115k
Saved on one vessel
over 9 months
24/7
Continuous monitoring
without lab sampling
3
Pillars of value
delivered per vessel
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Main propulsion diesel engines
TAN · TBN · Water · Soot · Viscosity · Oxidation
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Sterntube & shaft bearings
Water ingress · Contamination · Viscosity
Thruster hydraulic systems
Moisture · Particle count · Viscosity
Auxiliary engines & gensets
TAN · TBN · Soot · Viscosity · Fuel dilution
🛢️
Gearboxes & reduction units
Viscosity · Oxidation · Water · Contamination
The challenge

Periodic lab sampling cannot protect a vessel at sea

A marine vessel's diesel engine showed unexplained water concentration spikes in the lubricating oil. Periodic lab sampling could not pinpoint when or why the ingress was occurring — leaving the vessel at risk of costly cooler failure and unplanned downtime.

When a vessel is mid-voyage, there is no opportunity to send an oil sample to a shore-side laboratory. By the time a result returns, the damage has already progressed. Inline, real-time monitoring is the only way to catch problems as they develop.

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Water ingress — silent and fast

Cooler leaks and seal failures allow water into lube oil within hours. Standard lab sampling cannot catch an event between scheduled intervals.

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No sampling possible at sea

Sending oil samples to a laboratory is impractical mid-voyage. Vessels rely on fixed-interval oil changes that are either too early or too late.

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High cost of unplanned downtime

An unplanned engine shutdown at sea means emergency towing, lost charter revenue, and repairs that can run into six figures — all avoidable with early warning.

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Warranty and classification compliance

Classification societies and OEM warranties increasingly require documented oil condition records. Paper-based sampling logs are subjective and incomplete.

How FluidInspectIR® helps
Inline protection across the whole vessel

Real-time water ingress detection

FluidInspectIR® measures water content continuously. A cooler leak or seal failure is detected within one measurement cycle — long before water causes bearing damage. On one vessel, this pinpointed water spikes to specific harbour mooring events.

Continuous acid number monitoring

Rising TAN indicates combustion acid build-up in marine diesel oils. Inline TAN monitoring tracks acid load in real time, enabling condition-based oil changes rather than conservative fixed-interval replacements.

Remote fleet visibility via DataInspectIR®

Shore-side operations teams see oil health across the entire fleet from a single cloud dashboard — without waiting for a vessel to return to port. Trends, alerts, and condition history all in one place.

IP67 — built for the marine environment

FluidInspectIR® sensors are IP67 rated for continuous operation in marine engine rooms — withstanding vibration, humidity, and temperature extremes without recalibration or consumables.

Planned intervention, not emergency repair

48–72 hours advance warning from trend monitoring converts catastrophic breakdowns into planned port interventions — saving £50,000–£500,000 per event in avoided tow, repair, and lost charter costs.

Timestamped compliance records

Every measurement is time-stamped and stored in DataInspectIR®. Classification society inspections and OEM warranty claims are supported by objective, continuous oil condition evidence — not paper logs.

Pillars of value
Six financial levers for marine operators

FluidInspectIR® typically delivers three or more of these simultaneously for marine assets — with payback periods measured in months, not years.

↓ Oil Cost Reduction

Condition-based drain intervals

Replace conservative fixed-schedule oil changes with data-driven decisions. Extend engine oil intervals by 50%+ when oil condition allows — reducing oil spend, filter costs, and disposal.

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↓ Avoided Unplanned Downtime

48–72 hours advance warning

Early slope alerts convert catastrophic breakdowns into planned port interventions. Each avoided event saves £50,000–£500,000+ in tow, repair, and lost charter revenue.

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↑ Extended Component Life

Clean oil, less wear

Tight oil condition control reduces internal wear rates. Engine life extension of 20–30% reduces the frequency and cost of major overhauls and capital replacement cycles.

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↓ CO₂ & ESG Reduction

Fewer oil changes, lower footprint

Each avoided oil change on a marine diesel means 15–50 kg CO₂e less (oil production + disposal). Supports IMO environmental reporting and operator ESG commitments.

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✓ Health & Safety

Eliminate manual sampling at sea

Manual oil sampling in a marine engine room involves hot oil, confined spaces, and moving machinery. Inline monitoring removes technician exposure to these H&S risks entirely.

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✓ Warranty & Compliance

Objective, continuous records

Timestamped cloud data supports OEM warranty claims, classification society inspections, and flag-state compliance — replacing subjective paper-based oil logs.

What gets measured
Parameters critical for marine assets
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Water content

Detect cooler leaks and seal failures within minutes — before water reaches damaging concentrations in marine diesel oil.

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Total Acid Number (TAN)

Rising TAN indicates combustion acid build-up — the primary degradation driver in marine diesel engine oils.

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Total Base Number (TBN)

TBN depletion signals loss of acid neutralisation reserve — the key indicator for marine diesel oil change timing.

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Viscosity @40°C / @100°C

Viscosity shift indicates fuel dilution, thermal breakdown, or oil mixing — critical in marine main engines and gearboxes.

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Soot content

Combustion blowby soot in marine diesels — leading indicator of piston ring wear and combustion inefficiency.

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Oxidation level

Oxidation monitoring for gearbox and hydraulic oils where long drain intervals are desired.

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Optical particle count (OPC)

4, 6 and 14 µm particle counts detect wear debris and contamination in sterntube and hydraulic systems.

Fuel dilution

Detects fuel dilution from injector leaks or incomplete combustion — a major cause of viscosity drop and premature oil degradation.

Case study — Marine

£115,000 saved on a single vessel — water ingress identified and resolved

A marine vessel's diesel engine showed unexplained water concentration spikes. Periodic lab sampling could not pinpoint the source. FluidInspectIR® inline monitoring identified water spikes correlating with harbour mooring events — pointing directly to a failing cooler. The cooler was replaced in a planned manner during the next scheduled port call, avoiding catastrophic engine damage and unplanned downtime.

Discuss your vessel →
£115,000
Total saving over 9 months — avoided unplanned downtime + planned cooler replacement
↓ Avoided Unplanned Downtime
Pillar of value delivered — failure converted from emergency breakdown to planned repair
✓ Warranty & Compliance
Continuous timestamped records support OEM and classification requirements
Discuss your marine application
Talk to our application engineers about your vessel or fleet.
Main engines, sterntubes, thrusters — we'll tell you what's realistic for your operation.
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