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  • Apps | Calculators | ToolsExpand
    • Anchoring, Mooring, Cleats & HardwareExpand
      • Anchor Size / Holding Power Calculator (weight, bottom type)
      • Chain & Rope Strength & Length Calculator for Anchoring
      • Cleat Load Capacity & Number Recommendations
      • Fastener / Bolt / Through-Hull Strength Calculator
      • Fence / Rail Load & Deflection Tool (Rails & Fittings)
      • Mooring Line Load & Safety Factor Calculator
    • Fishing, Sonar & Recreation GearExpand
      • Drift & Current Fishing Spot Planner
      • Fish Welfare & Live Well Calculator
      • Rod Holder Layout & Number Planner
      • Sonar / Fish Finder Depth & Frequency Recommender
      • Tackle / Fishing Gear Load & Storage Planner
    • Inflatables, Towables & WatersportsExpand
      • Inflatable PSI / Pressure Estimator by Size & Temp
      • Inflatable / Towable Repair Patch Area & Material Needed Calculator
      • Inflatable / Towable Buoyancy / Weight Capacity Tool
      • Snorkel / Dive Exposure Time & Safe Depth Estimator
      • Tow Gear / Harness / Rope Strength Matching Tool
      • Wetsuit / Exposure Suit Thickness & Material Selector
    • Maintenance, Care, Corrosion & PaintsExpand
      • Adhesive / Sealant Amount / Mixing Ratio Calculator
      • Cleaning Chemical Dilution & Safe Use Calculator
      • Corrosion Risk / Material Life Estimator based on Exposure
      • Gelcoat Repair / Patch Material Amount Calculator
      • Paint / Coating / Epoxy Coverage Estimator
      • Pressure Washer / Wash-down Water Flow / PSI Tool
      • Washdown Frequency & Material Cost Estimator for Maintenance Budgeting
      • Winterization Prep Task & Material Planner
    • Performance, Propulsion & NavigationExpand
      • Boat Fuel Consumption & Range Calculator
      • Boat Speed Estimator (RPM, Prop Pitch, Slip)
      • Boat Weight & Load Capacity Estimator
      • Drift / Current & Tidal Drift Estimator
      • Engine Horsepower to Boat Size Ratio Advisor
      • GPS / Chartplotter Signal Range / Accuracy Tool
      • Hull Displacement & Volumetric Buoyancy Calculator
      • Hull Draft Calculator
      • Navigation Time Estimator (Distance & Speed)
      • Planing vs Displacement Hull Speed Limit Calculator
      • Propeller Pitch / Diameter Sizing Tool
      • Trim / Trim Tab Adjustment Planner
      • Wetted Surface Area / Drag Estimator
    • Power, Electrical, Lighting & ElectronicsExpand
      • Boat Solar Panel Sizing Calculator
      • Electronics Mount / Cooling Requirement Estimator
      • Entertainment System Power / Speaker / Amplifier Load Calculator
      • LED / Navigation Light Visibility / Coverage Estimator
      • Power Budget / Load Profile Planner
      • Radar System Range & Blind Spot Planner
      • VHF / Radio Range Estimator
      • Wire Gauge / Voltage Drop Calculator
    • Safety, Emergency & ComplianceExpand
      • Carbon Monoxide Detector Placement / Number Required
      • Distress Signal Kit Checklist / Signal Type Advisor
      • Fire Extinguisher Size / Type Required Based on Engine Room / Areas
      • First Aid Kit Contents Planner
      • Horn / Sound Signal Range & Legal Requirement Tool
      • Life Jacket / PFD Buoyancy & Number Needed Based on Boat Size / Load
      • Man Overboard Recovery Time Estimator & Gear Planner
      • Navigation Lights Legal Compliance Tool
    • Structural, Deck, Hatch, Portlights, FittingsExpand
      • Deck Hatch Lift Force & Catch Strength Tool
      • Deck Material Thickness vs Load Tool
      • Hatch & Portlight Size & Light / Ventilation Estimator
      • Latch & Hinge Load / Durability Estimator
      • Locker & Deck Storage Volume vs Weight Capacity Calculator
      • Rails & Fittings Load Deflection Tool
  • Maintenance
  • Safety
  • Electronics
  • Hardware
  • Boat Brands
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Performance, Propulsion & Navigation Tools for Every Boat

Maximize your boat’s speed, efficiency, and handling with our advanced marine performance calculators — from propeller sizing to fuel range and navigation planning.

  • Boat Fuel Consumption & Range Calculator
    Boat Fuel Consumption & Range Calculator
  • Boat Speed Estimator (RPM, Prop Pitch, Slip)
    Boat Speed Estimator
  • Drift Current & Tidal Drift Estimator
    Drift Current & Tidal Drift Estimator
  • Engine Horsepower to Boat Size Ratio Advisor
    Engine Horsepower to Boat Size Ratio Advisor
  • GPS Chartplotter Signal Range Accuracy Tool
    GPS Accuracy Tool
  • Hull Displacement & Volumetric Buoyancy Calculator
    Hull Displacement & Volumetric Buoyancy Calculator
  • Hull Draft Calculator
    Hull Draft Calculator
  • Navigation Time Estimator (Distance & Speed)
    Navigation Time Estimator
  • Planing vs Displacement Hull Speed Limit Calculator
    Planing vs Displacement Hull Speed Limit Calculator
  • Propeller Pitch & Diameter Sizing Tool
    Propeller Pitch & Diameter Sizing Tool
  • Trim Tab Adjustment Planner
    Trim Tab Adjustment Planner
  • Wetted Surface Area Drag Estimator
    Wetted Surface Area Drag Estimator
  • Boat Weight & Load Capacity Estimator
    Boat Weight & Load Capacity Estimator

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  • Apps | Calculators | Tools
    • Anchoring, Mooring, Cleats & Hardware
      • Anchor Size / Holding Power Calculator (weight, bottom type)
      • Chain & Rope Strength & Length Calculator for Anchoring
      • Cleat Load Capacity & Number Recommendations
      • Fastener / Bolt / Through-Hull Strength Calculator
      • Fence / Rail Load & Deflection Tool (Rails & Fittings)
      • Mooring Line Load & Safety Factor Calculator
    • Fishing, Sonar & Recreation Gear
      • Drift & Current Fishing Spot Planner
      • Fish Welfare & Live Well Calculator
      • Rod Holder Layout & Number Planner
      • Sonar / Fish Finder Depth & Frequency Recommender
      • Tackle / Fishing Gear Load & Storage Planner
    • Inflatables, Towables & Watersports
      • Inflatable PSI / Pressure Estimator by Size & Temp
      • Inflatable / Towable Repair Patch Area & Material Needed Calculator
      • Inflatable / Towable Buoyancy / Weight Capacity Tool
      • Snorkel / Dive Exposure Time & Safe Depth Estimator
      • Tow Gear / Harness / Rope Strength Matching Tool
      • Wetsuit / Exposure Suit Thickness & Material Selector
    • Maintenance, Care, Corrosion & Paints
      • Adhesive / Sealant Amount / Mixing Ratio Calculator
      • Cleaning Chemical Dilution & Safe Use Calculator
      • Corrosion Risk / Material Life Estimator based on Exposure
      • Gelcoat Repair / Patch Material Amount Calculator
      • Paint / Coating / Epoxy Coverage Estimator
      • Pressure Washer / Wash-down Water Flow / PSI Tool
      • Washdown Frequency & Material Cost Estimator for Maintenance Budgeting
      • Winterization Prep Task & Material Planner
    • Performance, Propulsion & Navigation
      • Boat Fuel Consumption & Range Calculator
      • Boat Speed Estimator (RPM, Prop Pitch, Slip)
      • Boat Weight & Load Capacity Estimator
      • Drift / Current & Tidal Drift Estimator
      • Engine Horsepower to Boat Size Ratio Advisor
      • GPS / Chartplotter Signal Range / Accuracy Tool
      • Hull Displacement & Volumetric Buoyancy Calculator
      • Hull Draft Calculator
      • Navigation Time Estimator (Distance & Speed)
      • Planing vs Displacement Hull Speed Limit Calculator
      • Propeller Pitch / Diameter Sizing Tool
      • Trim / Trim Tab Adjustment Planner
      • Wetted Surface Area / Drag Estimator
    • Power, Electrical, Lighting & Electronics
      • Boat Solar Panel Sizing Calculator
      • Electronics Mount / Cooling Requirement Estimator
      • Entertainment System Power / Speaker / Amplifier Load Calculator
      • LED / Navigation Light Visibility / Coverage Estimator
      • Power Budget / Load Profile Planner
      • Radar System Range & Blind Spot Planner
      • VHF / Radio Range Estimator
      • Wire Gauge / Voltage Drop Calculator
    • Safety, Emergency & Compliance
      • Carbon Monoxide Detector Placement / Number Required
      • Distress Signal Kit Checklist / Signal Type Advisor
      • Fire Extinguisher Size / Type Required Based on Engine Room / Areas
      • First Aid Kit Contents Planner
      • Horn / Sound Signal Range & Legal Requirement Tool
      • Life Jacket / PFD Buoyancy & Number Needed Based on Boat Size / Load
      • Man Overboard Recovery Time Estimator & Gear Planner
      • Navigation Lights Legal Compliance Tool
    • Structural, Deck, Hatch, Portlights, Fittings
      • Deck Hatch Lift Force & Catch Strength Tool
      • Deck Material Thickness vs Load Tool
      • Hatch & Portlight Size & Light / Ventilation Estimator
      • Latch & Hinge Load / Durability Estimator
      • Locker & Deck Storage Volume vs Weight Capacity Calculator
      • Rails & Fittings Load Deflection Tool
  • Maintenance
  • Safety
  • Electronics
  • Hardware
  • Boat Brands