Mariner

Your fleet's most experienced engineer never sleeps.

SailPlan Mariner is an AI agent that monitors every sensor on every vessel in your fleet — continuously. It catches what annual inspections miss, flags degradation months before failure, and tells you exactly which parts to order.

See Capabilities →
VESSEL SENSOR DATA Propulsion · HVAC · Fuel Hull · Speed · Vibration Temperatures · Flow Rates MARINER ENGINE ANOMALY DETECTION PREDICTIVE MAINTENANCE VOYAGE OPTIMIZATION
What Mariner Actually Does

Watch the agent work.

Mariner Console VESSEL: V-100  |  Coverage: 7 years
▶ INGESTING SENSOR DATA
224,000 readings across 4 AC plants, 4 propulsion
modules, shore power, ship-wide energy demand
▶ DATA QUALITY PASS
✗ Generator 1: zero output across all 224K records
  while Generator 2 and 3 report normally.
  Sensor disconnected. EXCLUDED.
✗ Electrical fuel FY2018-2019: reports zero while
  vessel underway at 12-17 kts. Physically impossible.
  EXCLUDED.
✗ Vibration sensor Module 2A: reads exactly zero
  across 14,100 records while sister modules report
  non-zero. Failed sensor. EXCLUDED.
✓ Clean dataset established. Proceeding with analysis.
▶ FINDING 1 — HVAC Unit 3: Efficiency Degradation
COP declined from 1.34 to 0.46 over 3 years.
Motor current stable (amps/kW constant at 0.56).
Motor is healthy. Problem is refrigerant-side.
→ Likely cause: condenser tube fouling + refrigerant
  undercharge + expansion valve wear
→ Detectable: Year 1 of decline. Went 3+ years
  without intervention.
▶ FINDING 2 — Hull Fouling (no fouling sensor available)
Using shaft torque-per-knot as drag proxy.
Baseline (post-cleaning): 13.3 torque/kt
Current: 25.9 torque/kt (+95%)
→ Hull drag has nearly doubled since last cleaning.
→ MARINER would have flagged this 18 months earlier
  than it became visible in annual reporting.

This is not a simulation. MARINER performed this analysis on real vessel telemetry in under 3 minutes.

Capabilities

What MARINER Catches

Equipment Degradation

1.4 1.0 0.7 0.4 0.0 Yr 1 Yr 2 Yr 3 Yr 5 Yr 7 FLAG COP

HVAC Unit 3 ran at half its rated efficiency for 3 years. The data had the story the whole time — nobody was looking. MARINER would have flagged it in year 1.

Hull Fouling Detection

33 26 20 13 2017 2018 2019 2020 2021 +20% FLAG t/kt

No fouling sensor? MARINER uses shaft torque as a drag proxy. It detected hull fouling 18 months before it showed up in annual reporting — before the vessel's heaviest operational period.

Parts-Level Diagnosis

Finding: Low efficiency
├── Motor current: stable → motor healthy
├── Refrigerant side: degraded
│   ├── Condenser tubes (HIGH)
│   ├── Refrigerant charge (HIGH)
│   └── Expansion valve (MEDIUM)
└── Action: Order parts before drydock

MARINER doesn't just flag problems — it tells you which parts to order. Condenser tube bundle, refrigerant recharge, and expansion valve replacement. Specific, actionable, traceable to the data.

Voyage Optimization

Port Solaris Port Azureton Crescent Cay Cape Verano 19.5 kts 17 kts $2.5M/year saved

A cruise vessel was sitting idle for 10 hours, then sprinting to make schedule. MARINER identified that departing 98 minutes earlier and reducing speed by 2 knots saves $2.5M per year. Zero guest impact.

The Counterfactual

When MARINER Would Have Caught It

The gap between these two timelines is the value proposition.

What Actually Happened
2017
Baseline established 13.3 t/kt
2018
Fouling accumulating
2019
Fouling worsening +59%
2020
Double baseline drag
2021
Peak drag 33.2 t/kt Finally cleaned
With MARINER
2017
Baseline established 13.3 t/kt
2018
+20% threshold crossed. Alert fired.
2019
Hull cleaning scheduled. Vessel at baseline through heaviest deployment.
Vessel
Baseline
First Flag
Months to Detection
V-100
13.3 torque/kt
Month 18 (+105%)
18 months earlier than annual reporting
V-121
14.6 torque/kt
Month 2 (+66%)
2 months after cleaning (fouling returned fast)
Architecture

Ship-autonomous.
Shore-enhanced.

  • SailPlan Edge Processor (MOXA BXP/DRP Series) — DNV Type Approved (Certificate TAA00003KB, valid through 2030), approved for installation on all DNV-classed vessels
  • Ruggedized industrial computer rated for marine temperature, humidity, vibration, and EMC environments — ingests directly from NMEA 2000, Modbus, serial sensor feeds
  • 90-day rolling data window stored onboard in TimescaleDB
  • Anomaly detection, efficiency scoring, and voyage logging run locally — not cloud-dependent
  • Grafana dashboard in the engine room — crew sees live gauges, alerts, trends
  • Daily compressed summary (~5KB) sent to shore when satellite is available
  • LLM analysis runs shore-side only, on aggregated fleet data
  • If satellite goes down, the crew still has their dashboard, alerts, and voyage log
ON THE VESSEL Sensors NMEA 2000 Modbus Serial Edge Processor MOXA BXP/DRP DNV Type Approved TimescaleDB 90-day window Engine Room Dashboard (Grafana) Live gauges · Alerts Trends · Voyage log ~5KB/day SHORE SIDE Fleet Aggregation & Benchmarking MARINER LLM Analysis Optimization · Compliance · Reporting · Fleet benchmarks
System Coverage

What MARINER Monitors

Propulsion
Shaft torque, RPM, fuel flow, SFC, vibration, inlet temps
HVAC
COP, motor current, chilled water temps, flow rates, runtime
Hull Performance
Torque-per-knot drag proxy, speed-power curves, fouling detection
Electrical
Generator load, shore power utilization, hotel load anomalies
Voyage
Speed profiles, leg timing, fuel burn per leg, sprint detection
Environmental
Seawater temperature, ambient conditions, seasonal correlation

Priced for your fleet. Deployed on your timeline.

Mariner is deployed per-vessel with fleet-wide analytics included. Pricing scales with fleet size, vessel complexity, and data integration requirements. Every deployment includes onboarding, edge hardware, and a dedicated SailPlan engineer for the first 90 days.

Fleet Monitoring

  • Per-vessel edge deployment
  • Continuous sensor monitoring
  • Local dashboards and alerting
  • Daily shore summaries

Predictive Maintenance

  • Equipment degradation detection
  • Parts-level diagnostics
  • Counterfactual timeline reporting
  • Maintenance scheduling recommendations

Voyage Optimization

  • Speed profile analysis
  • Fuel savings quantification
  • Itinerary optimization
  • Sprint elimination
Why MARINER

Built for Maritime Reality

"No fouling sensor? No problem."

Most vessels lack functioning hull fouling sensors. MARINER uses shaft torque-per-knot as a drag proxy — a field already being collected — to detect fouling without any additional instrumentation.

"Bad data doesn't break it."

Vessel sensor data is messy. Disconnected sensors, stuck readings, pipeline gaps. MARINER's first pass identifies and excludes physically impossible data before analysis begins. No garbage in, no garbage out.

18

months earlier.

In every analysis MARINER has run on historical vessel data, it identifies findings that were detectable months or years before they were caught by existing reporting. Monthly monitoring turns invisible degradation into actionable alerts.

Your fleet's data already has the answers. MARINER finds them.

Schedule a fleet assessment with our team.

SENSOR DATA MARINER DETECT PREDICT OPTIMIZE