Vessel Performance

Marine Vessel Performance Monitoring – Methodology Guide

This document explains how the SIYA Vessel Performance application evaluates vessel operational efficiency using shop trial references, noon report data, and advanced performance analytics to optimize fuel consumption and identify equipment degradation.

Vessel Performance Overview

The SIYA Vessel Performance Intelligence Platform transforms traditional vessel monitoring into a data-driven optimization system that maximizes operational efficiency, reduces fuel costs, and enables predictive maintenance across your fleet. By comparing real-time operational data against shop trial baselines and analyzing performance trends over time, the platform provides comprehensive visibility into vessel health and efficiency for technical superintendents, fleet managers, and vessel masters. Core Objectives:

Baseline Performance Tracking: Compare actual vessel performance against shop trial references to identify degradation
Fuel Efficiency Optimization: Monitor fuel consumption patterns and identify opportunities for efficiency improvements
Predictive Maintenance: Detect equipment performance degradation before failures occur
Speed-Power Analysis: Optimize vessel speed for fuel efficiency across different loading and weather conditions
Hull and Propeller Monitoring: Track hull fouling and propeller efficiency through speed loss analysis
Main Engine Health: Monitor engine performance parameters against manufacturer specifications
Voyage Optimization: Analyze voyage-level performance to identify best practices and inefficiencies

The platform processes noon reports, shop trial data, in-house ME/AE performance systems, and ERP data to calculate precise performance metrics, assess efficiency trends, and recommend optimization strategies for achieving operational excellence.

Data Sources

The Vessel Performance platform integrates operational and reference data from multiple sources to perform comprehensive performance analysis:

1) Noon Reports from Vessels (Primary Operational Data)

Noon reports submitted daily by vessels provide the foundational operational data for performance calculations:

Speed and Distance: Vessel speed over ground (SOG), speed through water (STW), distance sailed
Engine Performance: Main engine RPM, load percentage, running hours
Fuel Consumption: Fuel oil consumption by engine (ME, AE, boiler), fuel type and grade
Weather Conditions: Wind speed and direction (Beaufort scale), sea state, wave height, current
Draft and Displacement: Forward and aft drafts, calculated displacement
Cargo Status: Loaded/ballast condition, cargo quantity
Operational Mode: At sea, maneuvering, in port, cargo operations
Auxiliary Systems: Auxiliary engine running hours, boiler usage, cargo system operations
Position Data: Latitude, longitude, course

Data Refresh Frequency: Daily noon reports with real-time integration upon receipt

2) Shop Trial Data (Baseline Performance References)

Shop trial data from vessel commissioning provides the performance baseline:

Speed-Power Curves: Expected power requirements at different speeds under reference conditions
Engine Performance Curves: Main engine RPM, fuel consumption, and power output relationships
SFOC (Specific Fuel Oil Consumption): Reference fuel consumption rates at various engine loads
Propeller Curves: Propeller efficiency at different RPM and vessel speeds
Displacement-Speed Relationships: Expected speed at different displacement levels
Reference Conditions: Calm water, clean hull, no wind, standard temperature and pressure
Torque-Speed Relationships: Engine torque characteristics across load range
Load Diagrams: MEP (Mean Effective Pressure) limits and operational boundaries

Data Source: Vessel builder documentation, commissioning reports, manufacturer specifications

3) In-House ME/AE Performance Software

Specialized in-house software monitors main engine and auxiliary engine performance:

Main Engine Parameters: Cylinder pressures (Pmax, Pcomp), exhaust temperatures, turbocharger speeds
Auxiliary Engine Data: Load distribution, fuel consumption, running hours per unit
Performance Deviations: Real-time comparison against manufacturer specifications
Trend Analysis: Historical performance tracking for predictive maintenance
Alert Generation: Automatic notifications for parameter exceedances
Maintenance Scheduling: Performance-based maintenance interval recommendations

Data Refresh Frequency: Real-time streaming from engine monitoring systems

4) ERP Software System (Vessel & Fleet Management)

The enterprise ERP system provides vessel particulars and operational context:

Vessel Specifications: IMO numbers, vessel names, types, dimensions (LOA, beam, depth)
Technical Parameters: Engine make and model, installed power, propeller specifications, hull form
Drydocking History: Hull cleaning, propeller polishing, coating applications
Maintenance Records: Major overhauls, equipment replacements, performance-affecting work
Bunker Records: Fuel procurement, quality analysis, fuel type changes
Cargo History: Typical cargo types, loading patterns, operational profiles

Data Refresh Frequency: Daily synchronization with critical updates in real-time

5) External Voyage APIs (Position & Environmental Data)

Third-party maritime data providers supply real-time environmental and routing information:

Current Position: Real-time vessel position, heading, and speed
Weather Forecasts: Wind, wave, and current predictions along route
Actual Weather: Historical weather data for performance correlation
Route Optimization: Optimal routing recommendations for fuel efficiency
ETA Calculations: Predicted arrival times based on current performance
Port Information: Port approach conditions, tidal data, restrictions

Data Refresh Frequency: Hourly updates for position and weather data

6) Derived Performance Metrics (Platform Calculations)

The platform generates additional intelligence through advanced processing:

Speed Loss: Calculated speed loss due to hull fouling, weather, and operational factors
Slip Percentage: Propeller slip analysis indicating propeller efficiency
Weighted Average Slip: Time-weighted slip calculations across voyages
Torque Index: Comparison of actual vs. expected torque at given speed
SFOC Deviation: Fuel consumption deviation from shop trial references
FO Deviation: Fuel oil consumption variance analysis
Performance Efficiency: Overall vessel efficiency index
Hull Performance: Hull roughness and fouling indicators

Data Flow and Processing

Integration Architecture

The Vessel Performance platform follows a sophisticated multi-layer architecture ensuring accurate, real-time performance calculations and trend analysis across the fleet.

ETL Processing Pipeline

The comprehensive ETL pipeline transforms raw operational data through multiple stages of validation, normalization, and performance calculation:

Data Processing Stages

Stage 1: Extraction

Noon Report Parsing: Extract speed, fuel consumption, engine performance, and weather data
Shop Trial Loading: Retrieve baseline performance curves and reference parameters
Engine Data Integration: Pull real-time engine performance metrics from monitoring systems
Weather Correlation: Obtain actual weather conditions for performance normalization
Vessel Specifications: Load technical parameters for accurate calculations
Frequency: Continuous streaming for real-time data; daily batch for historical analysis

Stage 2: Transformation

2.1 Data Validation & Cleansing

Verify noon report completeness and consistency
Check for outliers and anomalous data points
Validate engine parameters against operational limits
Flag data quality issues for manual review
Correct or interpolate missing values where appropriate

2.2 Weather Normalization Adjust performance metrics for weather conditions to enable fair comparison:

Wind Resistance: Calculate additional resistance due to wind speed and direction
Wave Resistance: Assess impact of sea state on vessel speed
Current Effects: Account for favorable or adverse currents
Temperature Corrections: Adjust for air and water temperature variations

2.3 Speed-Power Calculation Calculate expected power requirements based on shop trial curves:

P_{expected} = f(V, \Delta, \ ext{Conditions})

Where:

$P_{expected}$ = Expected power output based on shop trial curve
$V$ = Vessel speed
$\Delta$ = Vessel displacement
$\ ext{Conditions}$ = Weather-normalized operating conditions

2.4 Slip Percentage Computation Propeller slip indicates propeller efficiency and hull condition:

\ ext{Slip} (\%) = \frac{V_{theoretical} - V_{actual}}{V_{theoretical}} \ imes 100

Where:

$V_{theoretical}$ = Theoretical speed based on propeller RPM and pitch
$V_{actual}$ = Actual vessel speed through water

Higher slip percentages indicate:

Hull fouling increasing resistance
Propeller damage or fouling
Inefficient propeller design for current conditions

2.5 Torque Index Calculation Torque index compares actual engine load to expected load at given speed:

\ ext{Torque Index} = \frac{P_{actual}}{P_{expected}}

Where:

$P_{actual}$ = Actual engine power output
$P_{expected}$ = Expected power from shop trial curve at same speed

Torque Index interpretation:

= 1.0: Performance matches shop trial (ideal)
> 1.0: Engine working harder than expected (overload, fouling, damage)
< 1.0: Engine working less than expected (underload, favorable conditions)

2.6 SFOC Deviation Calculation Specific Fuel Oil Consumption deviation indicates engine efficiency:

\ ext{SFOC Deviation} (\%) = \frac{\ ext{SFOC}_{actual} - \ ext{SFOC}_{shop trial}}{\ ext{SFOC}_{shop trial}} \ imes 100

Where:

$\ ext{SFOC}_{actual}$ = Measured fuel consumption per unit power (g/kWh)
$\ ext{SFOC}_{shop trial}$ = Reference consumption from shop trial at same load

Positive deviation indicates increased fuel consumption (degraded efficiency). 2.7 Speed Loss Assessment Calculate speed loss due to hull fouling and operational factors:

\ ext{Speed Loss} (\%) = \frac{V_{expected} - V_{actual}}{V_{expected}} \ imes 100

Where:

$V_{expected}$ = Expected speed from shop trial at given power and displacement
$V_{actual}$ = Weather-normalized actual speed

Speed loss indicates:

Hull fouling and marine growth
Propeller damage or fouling
Engine performance degradation

Stage 3: Loading

Performance Metrics Storage: Persist calculated metrics with indexed access
Deviation Records: Store historical deviations for trend analysis
Trend Aggregation: Compile time-series data for visualization
Real-Time Dashboards: Update live performance displays
Alert Generation: Trigger notifications for significant deviations
Report Generation: Prepare formatted performance reports

Key Capabilities

📊 Slip Performance Tracking

Comprehensive slip percentage monitoring across voyages with weighted average calculations. Track propeller efficiency trends over time to identify hull and propeller fouling requiring maintenance.

📈 Sea Trial Curve Comparison

Visual comparison of actual performance against shop trial baseline curves. Interactive power calculator tables showing expected power requirements at different speeds and drafts.

🎯 Deviation Analysis

Multi-dimensional deviation tracking including FO deviation heatmaps, speed loss trends, torque index monitoring, and SFOC deviation charts. Identify performance degradation patterns early.

⚡ Load Diagram Analysis

Real-time load diagram visualization showing operational points against MEP limits, torque/speed limits, and engine layout curves. Ensure safe engine operation within design boundaries.

🔧 Engine Performance Monitoring

Detailed SFOC tracking against shop trial references with load-specific analysis. Monitor engine health through fuel consumption trends and identify efficiency degradation.

🌊 Speed-Power Optimization

Comprehensive speed-power performance charts with normalized data points. Optimize vessel speed for fuel efficiency across different loading conditions and weather scenarios.

Core Modules

1. Slip Report

Propeller and Hull Performance Monitoring: The Slip Report module provides comprehensive tracking of vessel slip percentage over time, a key indicator of hull and propeller condition. Average Slip by Voyage: Bar chart visualization showing weighted average slip percentage for each voyage:

X-axis: Voyage name/identifier
Y-axis: Weighted average slip percentage
Color Coding: Consistent magenta/pink branding
Time Range Selection: Last 3 months, Last 6 months, Last 1 year, All Time

Example Data:

Voyage 001E: 10.2% slip
Voyage 003T: 12.6% slip
Voyage 005T: 11.4% slip
Voyage 008E: 13.2% slip
...

Slip Percentage Interpretation:

Slip Range	Condition	Action Required
< 5%	Excellent	Normal operation, clean hull and propeller
5-10%	Good	Monitor trends, plan routine cleaning
10-15%	Fair	Hull cleaning recommended within 3-6 months
15-20%	Poor	Hull cleaning required soon, fuel penalty significant
> 20%	Critical	Immediate hull cleaning, major fuel consumption impact

Weighted Average Slip Calculation:

\ ext{Weighted Avg Slip} = \frac{\sum_{i} (\ ext{Slip}_i \ imes \ ext{Hours}_i)}{\sum_{i} \ ext{Hours}_i}

Where:

$\ ext{Slip}_i$ = Slip percentage for time period $i$
$\ ext{Hours}_i$ = Duration of time period $i$

This provides a more accurate representation than simple arithmetic mean, accounting for varying voyage durations. Trend Analysis: The platform automatically identifies:

Increasing Slip Trend: Indicates progressive hull fouling
Sudden Slip Increase: May indicate propeller damage or marine growth
Post-Drydock Improvement: Validates effectiveness of hull cleaning and coating
Seasonal Variations: Identifies patterns related to trading areas and water temperatures

2. Sea Trial Curves

Baseline Performance Reference: The Sea Trial Curves module displays the vessel’s reference performance curves from commissioning, providing the baseline for all performance comparisons. Speed-Power Curve: Interactive line chart showing the relationship between vessel speed and required power:

X-axis: Speed (knots) from minimum to maximum service speed
Y-axis: Power (kW) required at each speed
Curve Lines: Multiple curves for different displacement/draft conditions
Reference Points: Blue dots indicating shop trial test points
Current Operating Point: Highlighted marker showing latest performance

Min/Max Speed Selectors: Adjustable sliders to focus on specific speed ranges:

Min Speed: Default 10.0 knots (adjustable)
Max Speed: Default 25.5 knots (adjustable)
Reset Button: Return to full range view

Power Calculator Table: Comprehensive table showing expected power requirements:

Speed/Draft	6m	7m	8m	9m	10m	11m
10 knots	2,969 kW	2,999 kW	3,034 kW	3,068 kW	3,102 kW	3,136 kW
11 knots	3,250 kW	3,279 kW	3,312 kW	3,344 kW	3,377 kW	3,409 kW
12 knots	3,671 kW	3,701 kW	3,735 kW	3,769 kW	3,803 kW	3,837 kW
13 knots	4,266 kW	4,302 kW	4,341 kW	4,380 kW	4,419 kW	4,459 kW
14 knots	5,073 kW	5,117 kW	5,167 kW	5,217 kW	5,266 kW	5,316 kW
15 knots	6,126 kW	6,186 kW	6,252 kW	6,318 kW	6,384 kW	6,450 kW
16 knots	7,463 kW	7,543 kW	7,632 kW	7,722 kW	7,811 kW	7,900 kW
17 knots	9,118 kW	9,227 kW	9,347 kW	9,467 kW	9,588 kW	9,708 kW
18 knots	11,129 kW	11,273 kW	11,434 kW	11,594 kW	11,755 kW	11,915 kW
19 knots	13,530 kW	13,720 kW	13,930 kW	14,141 kW	14,351 kW	14,562 kW
20 knots	16,359 kW	16,603 kW	16,874 kW	17,145 kW	17,417 kW	17,688 kW
21 knots	19,650 kW	19,960 kW	20,304 kW	20,648 kW	20,992 kW	21,335 kW
22 knots	23,441 kW	23,827 kW	24,257 kW	24,686 kW	25,115 kW	25,545 kW
23 knots	27,766 kW	28,242 kW	28,771 kW	29,299 kW	29,828 kW	30,357 kW
24 knots	32,663 kW	33,241 kW	33,884 kW	34,527 kW	35,169 kW	35,812 kW
25 knots	38,166 kW	38,861 kW	39,634 kW	40,406 kW	41,179 kW	41,952 kW

Usage:

Voyage Planning: Determine optimal speed for fuel efficiency
Performance Verification: Compare actual power consumption against table values
Charter Party Compliance: Verify guaranteed speed-consumption performance
Fuel Budgeting: Estimate fuel consumption for planned voyages

3. Deviation Report

Multi-Dimensional Performance Analysis: The Deviation Report module provides comprehensive tracking of performance deviations across multiple parameters. Sub-Modules:

3.1 Deviation Table

Tabular view of all performance metrics with deviation values:

Date	Voyage	Speed (kn)	Power (kW)	SFOC (g/kWh)	Slip (%)	Torque Index	FO Deviation (%)
2025-09-22	530E	18.5	11,250	195.2	12.3	1.05	+3.2%
2025-09-19	522E	17.8	10,450	192.8	11.8	1.02	+1.8%
2025-09-17	514W	19.2	12,100	197.5	13.1	1.08	+4.5%

Filtering Options:

Date Range: 6 Months, Custom date selection
Max Wind (BF): Filter by Beaufort scale (≤5, ≤3, etc.)
Max Sea State: Filter by sea state (≤3, ≤5, etc.)
Min ME Hours: Minimum main engine running hours for data validity

3.2 FO Deviation Heatmap

Visual heatmap showing fuel oil consumption deviation patterns:

X-axis: Speed (knots) in 0.5-knot increments
Y-axis: Draft (meters) in 0.5-meter increments
Color Coding:
- Green: Within ±5% of shop trial (good performance)
- Yellow: ±5% to ±10% deviation (monitor)
- Orange: ±10% to ±20% deviation (action recommended)
- Red: >±20% deviation (immediate action required)
- Dark Red/Purple: >±50% deviation (critical)

Example Heatmap Values:

Draft 7.0m, Speed 16.0 knots: 98.0% (green - excellent)
Draft 8.0m, Speed 13.0 knots: 58.9% (red - poor)
Draft 8.5m, Speed 14.5 knots: 59.4% (red - poor)
Draft 12.0m, Speed 12.0 knots: 50.9% (red - poor)

Interpretation:

Green clusters: Optimal operating envelope for fuel efficiency
Red clusters: Conditions causing excessive fuel consumption
Patterns: Identify speed-draft combinations to avoid

3.3 Speed Loss Trend

Time-series chart showing speed loss percentage over time:

X-axis: Date
Y-axis: Speed loss percentage
Trend Line: Moving average showing overall trend
Data Points: Individual voyage measurements
Color Coding: Green (acceptable) to red (excessive)

Speed Loss Interpretation:

Speed Loss	Condition	Hull Cleaning Recommendation
< 3%	Excellent	No action required
3-5%	Good	Plan cleaning in 6-12 months
5-8%	Fair	Cleaning recommended in 3-6 months
8-12%	Poor	Cleaning required within 3 months
> 12%	Critical	Immediate cleaning, significant fuel penalty

3.4 Actual vs Expected Speed

Dual-line chart comparing actual vessel speed against expected speed:

Green Line: Expected speed based on shop trial and current power
Red Line: Actual achieved speed
Gap: Visual representation of speed loss
Tooltip: Hover to see exact values and deviation percentage

Example:

Date: 06/08/25
Actual Speed: 19.6 knots
Expected Speed: 22.0 knots
Speed Loss: 10.9% (hull cleaning recommended)

3.5 Torque Index Trend

Time-series visualization of torque index over time:

Reference Line (y=1.0): Ideal shop trial performance
Green Dots: Torque index < 1 (underload conditions)
Red Dots: Torque index > 1 (overload conditions)
Trend: Increasing torque index indicates progressive performance degradation

Torque Index Patterns:

Stable around 1.0: Consistent performance matching shop trial
Gradual Increase: Hull fouling or propeller efficiency loss
Sudden Spike: Propeller damage, heavy weather, or operational issue
Below 1.0: Light load operations, favorable conditions, or recent hull cleaning

3.6 Load Diagram

Real-time load diagram showing engine operating point against design limits: Chart Elements:

MEP Limit Line: Maximum Mean Effective Pressure boundary (blue)
Torque/Speed Limit Line: Maximum torque envelope (red)
Power Limit Line: Maximum power output limit (purple)
Speed Limit Line: Maximum engine RPM limit (green)
Engine Layout Curve: Optimal operating curve (orange)
Noon Report Data Points: Actual operating points (brown triangles)

Axes:

X-axis: Engine RPM percentage (35% to 105%)
Y-axis: Engine Load percentage (0% to 105%)

Latest Noon Report Data Table:

Date	RPM %	Load %	Result
2025-09-22	49.0%	11.5%	Normal
2025-09-19	65.4%	25.0%	Normal
2025-09-17	70.2%	28.3%	Normal
2025-09-16	67.3%	25.4%	Normal
2025-09-14	59.6%	19.0%	Normal

Result Classification:

Normal: Operating within all design limits
Caution: Approaching one or more limits
Warning: Exceeding recommended operating envelope
Critical: Exceeding design limits (immediate action required)

Use Cases:

Verify engine operation within safe boundaries
Identify overload conditions
Optimize engine loading for efficiency
Validate operational practices against manufacturer guidelines

3.7 SFOC Deviation

Scatter plot showing Specific Fuel Oil Consumption deviation from shop trial:

X-axis: Engine Load percentage (0% to 100%)
Y-axis: SFOC (g/kWh)
Shop Trial Line: Black reference line showing expected SFOC
Noon Data Points: Green dots showing actual SFOC measurements
Deviation Bands: Color-coded zones indicating acceptable ranges
- Green Zone: Within ±5% of shop trial (acceptable)
- Yellow Zone: ±5% to ±10% deviation (monitor)
- Red Zone: >±10% deviation (action required)

SFOC Deviation Analysis: Points above the shop trial line indicate:

Engine efficiency degradation
Poor fuel quality
Incorrect engine tuning
Worn engine components

Points below the shop trial line indicate:

Better than expected efficiency (rare)
Measurement errors
Recent engine overhaul or optimization

3.8 Performance Chart

Comprehensive speed-power performance scatter plot:

X-axis: Speed (knots)
Y-axis: Power (kW)
Sea Trial Line: Black curve showing shop trial baseline
Noon Data Points: Green dots showing actual performance (normalized for weather)
Deviation Bands: Color-coded zones
- Green Zone: Within acceptable deviation from shop trial
- Yellow Zone: Moderate deviation
- Red Zone: Significant deviation indicating performance issues

Performance Pattern Identification:

Points on or near sea trial line: Excellent performance
Points above sea trial line: Higher power required than expected (fouling, damage)
Points below sea trial line: Lower power than expected (favorable conditions, measurement error)
Scatter pattern: Wide scatter indicates inconsistent performance or data quality issues

AI-Powered Analytics & Insights

Machine Learning Capabilities

The Vessel Performance platform leverages advanced AI algorithms to transform operational data into actionable optimization intelligence. 1. Hull Fouling Prediction Model Predictive Fouling Analysis: The platform uses historical slip percentage and speed loss data to predict when hull cleaning will be required. Input Variables:

Historical slip percentage trends
Speed loss progression over time
Days since last drydocking/hull cleaning
Trading area and water temperature
Antifouling coating type and age
Seasonal fouling patterns

Fouling Prediction Model:

\ ext{Days to Cleaning} = f(\ ext{Current Slip}, \ ext{Slip Rate}, \ ext{Threshold})

Where:

Current Slip: Latest measured slip percentage
Slip Rate: Rate of slip increase per month
Threshold: Target slip percentage for hull cleaning (typically 15%)

Output:

Predicted Cleaning Date: Estimated date when hull cleaning will be required
Confidence Interval: Statistical confidence in prediction
Fuel Penalty Forecast: Projected additional fuel consumption until cleaning
Optimal Cleaning Window: Recommended timeframe considering operational schedule

Example Prediction:

Current Slip: 12.3%
Slip Increase Rate: 0.8% per month
Cleaning Threshold: 15%
Days Since Last Cleaning: 245 days

Prediction:
- Hull cleaning recommended in: 3.4 months (102 days)
- Optimal cleaning date: January 15, 2026
- Projected fuel penalty until cleaning: 4.2%
- Estimated fuel cost increase: $45,000
- Recommended action: Schedule drydocking in Q1 2026

Confidence Level: 87%

2. Optimal Speed Recommendation Engine Fuel-Efficient Speed Optimization: The AI analyzes historical performance data to recommend optimal speeds for different operational scenarios. Optimization Objective: Minimize fuel cost per nautical mile while meeting schedule requirements:

\ ext{Minimize: } \frac{\ ext{Fuel Cost}}{\ ext{Distance}} = \frac{FC(V) \ imes P_{fuel}}{V}

Subject to:

Arrival time constraints (ETA requirements)
Engine load limits (safe operation)
Charter party speed guarantees
Weather routing considerations

Where:

$FC(V)$ = Fuel consumption as function of speed
$P_{fuel}$ = Fuel price per tonne
$V$ = Vessel speed

Speed Recommendation Output:

Route: Singapore to Rotterdam
Distance: 8,450 NM
Required ETA: 35 days
Fuel Price: $650/MT

Speed Scenarios:

Scenario A: Maximum Speed (20 knots)
- Transit Time: 17.7 days
- Fuel Consumption: 1,250 MT
- Fuel Cost: $812,500
- Cost per NM: $96.15
- Early Arrival: 17.3 days

Scenario B: Economical Speed (16 knots)
- Transit Time: 22.0 days
- Fuel Consumption: 850 MT
- Fuel Cost: $552,500
- Cost per NM: $65.38
- Early Arrival: 13.0 days

Scenario C: Optimal Speed (14.5 knots) ⭐ RECOMMENDED
- Transit Time: 24.3 days
- Fuel Consumption: 720 MT
- Fuel Cost: $468,000
- Cost per NM: $55.38
- Early Arrival: 10.7 days
- Fuel Savings vs Max Speed: $344,500 (42%)

Scenario D: Slow Steaming (12 knots)
- Transit Time: 29.4 days
- Fuel Consumption: 565 MT
- Fuel Cost: $367,250
- Cost per NM: $43.46
- Early Arrival: 5.6 days
- Risk: Minimal schedule buffer

Recommendation: Scenario C (14.5 knots)
- Optimal balance of fuel efficiency and schedule security
- Significant cost savings with adequate schedule margin
- Allows for weather delays without charter party penalties
- Reduces engine wear and maintenance requirements

3. Engine Performance Degradation Detection Predictive Maintenance Intelligence: The platform monitors engine performance trends to predict when maintenance will be required. Monitored Parameters:

SFOC deviation trend
Torque index progression
Cylinder pressure variations
Exhaust temperature patterns
Turbocharger efficiency

Degradation Detection Algorithm:

\ ext{Health Score} = \sum_{i} w_i \ imes \frac{P_i - P_{baseline,i}}{P_{threshold,i}}

Where:

$w_i$ = Weighting factor for parameter $i$
$P_i$ = Current value of parameter $i$
$P_{baseline,i}$ = Baseline (shop trial) value
$P_{threshold,i}$ = Acceptable deviation threshold

Health Score Interpretation:

Score	Status	Action Required
0-0.3	Excellent	Normal operation
0.3-0.5	Good	Continue monitoring
0.5-0.7	Fair	Plan maintenance in next port
0.7-0.9	Poor	Maintenance required soon
> 0.9	Critical	Immediate maintenance required

Example Alert:

Engine Performance Alert - MV OCEAN BREEZER

Health Score: 0.68 (Fair)

Degradation Indicators:
✗ SFOC Deviation: +8.5% (threshold: ±5%)
✗ Torque Index: 1.12 (threshold: 1.05)
⚠ Exhaust Temp Spread: 35°C (threshold: 40°C)
✓ Turbocharger Speed: Normal
✓ Cylinder Pressures: Within limits

Predicted Issue: Fuel injection system efficiency loss

Recommended Actions:
1. Inspect and clean fuel injectors at next port
2. Check fuel quality and filtration
3. Verify fuel pump timing and pressure
4. Consider fuel additive treatment

Estimated Maintenance Window: Within 30 days
Fuel Penalty if Deferred: +2.5% ($12,000/month)
Maintenance Cost: $8,000
ROI: Payback in 0.7 months

4. Comparative Fleet Performance Benchmarking Sister Vessel Performance Comparison: The platform compares performance across similar vessels to identify best practices and underperformers. Benchmarking Metrics:

Average slip percentage
SFOC at standard load (75%)
Speed loss percentage
Fuel consumption per NM
Days between hull cleanings

Example Benchmarking Report:

Sister Vessel Performance Comparison
Vessel Class: Panamax Bulk Carrier (75,000 DWT)
Number of Vessels: 8

Performance Rankings (Last 6 Months):

Rank 1: MV PACIFIC STAR ⭐
- Average Slip: 8.2%
- SFOC Deviation: +1.5%
- Speed Loss: 3.8%
- Fuel Efficiency: Excellent
- Last Hull Cleaning: 180 days ago

Rank 2: MV ATLANTIC TRADER
- Average Slip: 9.5%
- SFOC Deviation: +2.8%
- Speed Loss: 4.5%
- Fuel Efficiency: Very Good

Rank 3: MV OCEAN BREEZER (Your Vessel)
- Average Slip: 12.3%
- SFOC Deviation: +5.2%
- Speed Loss: 7.1%
- Fuel Efficiency: Fair
- Last Hull Cleaning: 245 days ago

Rank 4: MV INDIAN OCEAN
- Average Slip: 13.8%
- SFOC Deviation: +6.5%
- Speed Loss: 8.9%
- Fuel Efficiency: Fair

Performance Gap Analysis:

Your Vessel vs. Best Performer (MV PACIFIC STAR):
- Slip Difference: +4.1% (worse)
- SFOC Difference: +3.7% (worse)
- Speed Loss Difference: +3.3% (worse)
- Estimated Fuel Penalty: $28,000/month

Improvement Potential:
If MV OCEAN BREEZER matches MV PACIFIC STAR performance:
- Annual Fuel Savings: $336,000
- Required Actions:
  1. Hull cleaning (immediate)
  2. Propeller polishing
  3. Engine tuning and optimization
  4. Fuel quality management improvement

Estimated Investment: $85,000
Payback Period: 3.0 months
ROI: 395% annually

5. Weather Routing Optimization Performance-Based Route Optimization: The platform integrates vessel-specific performance characteristics with weather forecasting to recommend optimal routes. Optimization Factors:

Vessel speed-power curves
Current hull and propeller condition (slip percentage)
Weather forecast (wind, waves, currents)
Fuel consumption at different speeds
ETA requirements and schedule constraints

Route Comparison:

Route Optimization: Singapore to Rotterdam
Departure: November 15, 2025

Route Option A: Great Circle (Shortest Distance)
- Distance: 8,450 NM
- Expected Weather: Moderate SW winds, 3-4m waves
- Recommended Speed: 14.5 knots
- Transit Time: 24.3 days
- Fuel Consumption: 785 MT (adjusted for weather)
- Fuel Cost: $510,250
- Risk: Moderate weather delays

Route Option B: Southern Route (Weather Avoidance) ⭐ RECOMMENDED
- Distance: 8,680 NM (+230 NM)
- Expected Weather: Light winds, 1-2m waves
- Recommended Speed: 15.2 knots
- Transit Time: 23.8 days
- Fuel Consumption: 745 MT (better efficiency in calm seas)
- Fuel Cost: $484,250
- Savings: $26,000 (5.1%)
- Risk: Low weather delays

Route Option C: Northern Route (Faster)
- Distance: 8,520 NM
- Expected Weather: Strong NW winds, 4-5m waves
- Recommended Speed: 13.8 knots (reduced due to weather)
- Transit Time: 25.7 days
- Fuel Consumption: 820 MT (higher due to adverse conditions)
- Fuel Cost: $533,000
- Additional Cost: $48,750 (10.6%)
- Risk: High weather delays and potential damage

Recommendation: Route Option B (Southern Route)
- Optimal fuel efficiency in favorable weather
- Faster transit despite longer distance
- Lower risk of weather-related delays
- Reduced vessel stress and maintenance
- Best overall value proposition

6. Fuel Quality Impact Analysis Fuel Quality Correlation with Performance: The platform analyzes the relationship between fuel quality and engine performance to optimize bunker procurement. Monitored Fuel Parameters:

Viscosity
Density
Sulfur content
Carbon residue
Water content
Cetane index

Fuel Quality-Performance Correlation:

Fuel Quality Analysis - MV OCEAN BREEZER (Q3 2025)

Bunker Port Performance Comparison:

Singapore Bunkers:
- Average Viscosity: 180 cSt @ 50°C
- Average Density: 0.975 g/cm³
- SFOC Performance: +2.1% vs shop trial
- Engine Cleanliness: Excellent
- Performance Rating: ⭐⭐⭐⭐⭐

Rotterdam Bunkers:
- Average Viscosity: 280 cSt @ 50°C
- Average Density: 0.991 g/cm³
- SFOC Performance: +5.8% vs shop trial
- Engine Cleanliness: Fair (increased sludge)
- Performance Rating: ⭐⭐⭐

Fujairah Bunkers:
- Average Viscosity: 320 cSt @ 50°C
- Average Density: 0.998 g/cm³
- SFOC Performance: +8.2% vs shop trial
- Engine Cleanliness: Poor (significant sludge)
- Performance Rating: ⭐⭐

Performance Impact:

Best Fuel (Singapore) vs Worst Fuel (Fujairah):
- SFOC Difference: 6.1%
- Fuel Cost Impact: $18,000/month
- Maintenance Impact: Increased purifier cleaning, higher sludge disposal
- Engine Health: Better long-term reliability with Singapore fuel

Recommendation:
- Prioritize Singapore for bunkering when route allows
- Avoid Fujairah bunkers unless no alternative
- Budget $25/MT premium for Singapore fuel quality
- ROI: Fuel efficiency gains offset premium cost
- Long-term benefit: Reduced engine maintenance costs

Benefits & Outcomes

Operational Excellence

Fuel Cost Reduction: 5-15% fuel savings through performance optimization and hull cleaning scheduling
Predictive Maintenance: Early detection of equipment degradation prevents costly failures
Optimal Speed Selection: Data-driven speed recommendations balance fuel efficiency with schedule requirements
Hull Cleaning Optimization: Scientific scheduling of hull cleaning maximizes ROI and minimizes fuel penalties
Engine Health Monitoring: Continuous tracking ensures engines operate at peak efficiency

Strategic Advantages

Performance Benchmarking: Compare vessel performance against sister ships to identify best practices
Data-Driven Decisions: Comprehensive analytics support strategic fleet management decisions
Charter Party Compliance: Verify guaranteed speed-consumption performance for charter contracts
Competitive Edge: Superior operational efficiency provides significant cost advantages
Environmental Performance: Optimized operations reduce emissions and support sustainability goals

Financial Impact

Fuel Savings: $200,000-$ 500,000 per vessel annually through efficiency optimization
Maintenance Cost Reduction: Predictive maintenance reduces emergency repairs by 40%
Hull Cleaning ROI: Optimal timing maximizes fuel savings while minimizing cleaning frequency
Speed Optimization: Route-specific speed recommendations reduce fuel costs by 10-20%
Budget Accuracy: Precise performance tracking enables accurate fuel budget forecasting

Technical Excellence

Shop Trial Validation: Verify vessel performance against builder guarantees
Performance Degradation Tracking: Quantify impact of hull fouling, engine wear, and operational factors
Root Cause Analysis: Identify specific causes of performance deviations
Optimization Recommendations: AI-powered suggestions for operational improvements
Continuous Improvement: Data-driven approach enables ongoing performance enhancement

Summary

The SIYA Vessel Performance platform transforms traditional vessel monitoring into a comprehensive performance optimization system. By integrating noon reports, shop trial data, in-house ME/AE performance systems, and ERP data, the platform provides:

Baseline Performance Tracking: Continuous comparison against shop trial references
Slip Percentage Monitoring: Track propeller and hull efficiency over time
Speed-Power Analysis: Optimize vessel speed for fuel efficiency
Deviation Detection: Multi-dimensional performance deviation tracking
Engine Health Monitoring: SFOC and torque index analysis for predictive maintenance
Load Diagram Verification: Ensure safe engine operation within design limits
Hull Fouling Prediction: AI-powered forecasting of hull cleaning requirements
Optimal Speed Recommendations: Route-specific speed optimization for fuel savings
Fleet Benchmarking: Compare performance across sister vessels
Weather Routing Integration: Performance-based route optimization

The platform empowers technical superintendents, fleet managers, and vessel masters to maximize operational efficiency, reduce fuel costs, optimize maintenance scheduling, and maintain vessels at peak performance throughout their operational life. Performance Optimization Made Simple:

Monitor vessel performance against shop trial baselines continuously
Detect equipment degradation early through trend analysis
Optimize fuel consumption through data-driven speed selection
Schedule hull cleaning scientifically to maximize ROI
Benchmark performance against fleet to identify best practices
Transform operational data into actionable performance intelligence

Micro Apps

​Marine Vessel Performance Monitoring – Methodology Guide