Nautical Tools
Browse all available nautical tools.
Available tools
- Anchor Horizontal Scope Projection Tool Return the straight taut-line geometric reach, excluding catenary shape and anchoring recommendations.
- Ballast Tank Free Surface Correction Term Tool Compute the small-angle free-surface metacentric-height reduction from explicit hydrostatic inputs.
- Bearing Quadrant Token Tool Label a clockwise-from-north bearing quadrant with explicit axis-boundary labeling.
- Chain Scope Depth Angle Term Tool Calculate chain scope depth angle term from explicit caller-supplied inputs.
- Chart Scale Ground Tolerance Tool Convert an explicit chart measurement tolerance to ground distance without assigning navigational accuracy.
- Chart Sounding Drying Height Sign Apply explicit sounding-versus-drying and depth sign flags to a supplied chart ordinate without resolving a vertical datum.
- Compass Card Sector Boundary Policy Tool Equal sectors beginning at north, with an explicit side assigned to exact boundary headings.
- Compass Deviation East West Token Express an explicitly supplied compass-deviation magnitude and direction under a caller-selected east-positive sign convention.
- Fathom Depth Chart Label Tool Label a nonnegative chart depth in international fathoms and convert it to meters using exactly 1.8288 m per fathom.
- Fathoms to Meters Converter Convert a depth in fathoms to meters using the exact international fathom of one point eight two eight eight meters.
- Hull Speed Calculator Calculate the displacement hull speed in knots from the waterline length in feet.
- Knot Speed Log Interval Distance Tool Convert a constant nonnegative speed log in knots over an explicit interval into nautical miles.
- Knots to Kilometers Per Hour Converter Convert a speed in knots to kilometers per hour using the exact factor of one point eight five two.
- Mooring Catenary Endpoint Horizontal Projection Tool Evaluate a catenary endpoint measured horizontally from its lowest point, using a supplied positive tension/weight parameter.
- Mooring Line Horizontal Share Tool Resolve an ideal straight line tension geometrically without line-strength or safety recommendations.
- Mooring Line Length Slack Ratio Tool Calculate mooring line length slack ratio from explicit caller-supplied inputs.
- Nautical Course Circular Difference Tool Return the shortest signed second-minus-first course difference in [-180,180) degrees; an exact half-turn chooses -180.
- Nautical Draft Forward Aft Average Tool Calculate nautical draft forward aft average from explicit caller-supplied inputs.
- Nautical Log Calibration Distance Ratio Divide an explicit reference distance by indicated log distance without establishing operational calibration.
- Nautical Log Unit Factor Tool Convert a logged distance with explicit compatible distance-unit factors, without navigation inference.
- Nautical Magnetic Deviation Variation Order Tool Calculate nautical magnetic deviation variation order from explicit caller-supplied inputs.
- Nautical Mile to Kilometers Converter Convert a distance in nautical miles to kilometers using the exact factor of one point eight five two.
- Nautical Sounding Keel Datum Shift Tool Calculate nautical sounding keel datum shift from explicit caller-supplied inputs.
- Nautical Speed Over Water Ground Gap Tool Subtract scalar speeds without treating the difference as a complete current vector.
- Nautical Time Distance Residual Tool Compare a logged distance with an explicit constant-speed nautical time model, without route planning.
- Nautical Watch Bell Half Hour Index Tool Map elapsed minutes in an explicit four-hour watch to half-hour bell count, with zero at the watch start.
- Nautical: Anchor Rode Angle Geometric Tool Compute ideal taut straight-rode geometry only, ignoring catenary, surge, load and holding; not anchor-sizing or navigation safety advice.
- Nautical: Bearing Relative To Vessel Heading Tool Compute clockwise vessel-relative bearing and geometric port/starboard/ahead/astern labels from same-reference headings, not collision-avoidance advice.
- Nautical: Cargo Tank Ullage Sounding Pair Tool Crosswalk ideal vertical tank ullage/sounding using an explicit common top-to-bottom reference height; excludes trim, list, calibration and cargo volume.
- Nautical: Compass Point Halfwind Label Tool Label a bearing by the nearest sixteen-point compass halfwind with clockwise half-open ties; no magnetic correction.
- Nautical: Vessel Port Star Board Coordinate Sign Tool Crosswalk one vessel transverse coordinate under an explicitly declared port-positive or starboard-positive convention; no frame inference.
- Navigation Light Relative Sector Membership Test an explicit relative bearing against a supplied clockwise angular sector without selecting statutory navigation-light sectors.
- Navigation Watch Time Midnight Carry Tool Calculate navigation watch time midnight carry from explicit caller-supplied inputs.
- Port Starboard Signed Offset Crosswalk Tool Calculate port starboard signed offset crosswalk from explicit caller-supplied inputs.
- Propeller Advance Coefficient Reference Tool Signed advance coefficient using rotations per second and consistent distance units.
- Propeller Slip Measured Advance Term Tool Calculate propeller slip measured advance term from explicit caller-supplied inputs.
- Relative Bearing Bow Quarter Label Tool Calculate relative bearing bow quarter label from explicit caller-supplied inputs.
- Rhumb Line Distance Calculator Calculate the rhumb line distance in nautical miles between two geographic positions along a constant bearing.
- Sail Area Center Height Factor Tool Sum supplied projected sail-area times center height; this is a geometric moment, not a stability assessment.
- Sailing Polar Single Speed Ratio Compare an explicit observed speed with a supplied positive polar-table speed on the same units without interpolating a polar or routing.
- Ship Frame Port Starboard Sign Tool Classify an explicit transverse coordinate under its supplied ship-frame sign convention.
- Sounding Datum Uncertainty Sign Tool Subtract tide above datum and combine supplied uncertainty as independent RSS or a worst-case sum.
- Tank Sounding Volume Factor Apply Apply an explicit correction factor to a supplied tank-table volume without deriving sounding tables or trim corrections.
- Thrust Deduction Effective Force Term Tool Calculate thrust deduction effective force term from explicit caller-supplied inputs.
- Tide Height Datum Offset Tool Translate a supplied tide height between vertical datums with elevations in one common reference; no tide prediction.
- Tide Height Observation Uncertainty Margin Tool Calculate tide height observation uncertainty margin from explicit caller-supplied inputs.
- Tide Level Minus Draft Margin Tool Compute static under-keel clearance from charted depth and tide on the same datum, excluding squat, waves, and safety allowances.
- Tide Observation Low High Phase Token Label an explicitly reported tide phase without predicting tides or deriving phase from a height.
- Tide Observation Reference Level Shift Tool Calculate tide observation reference level shift from explicit caller-supplied inputs.
- Tide Range Calculator Calculate tidal range in meters as high-water height minus low-water height, using heights referenced to the same chart datum.
- Transit Bearing Signed Error Compare explicit observed and reference bearings using shortest signed clockwise-positive error with a positive half-turn tie.
- Transverse Shift Heeling Moment Term Tool Calculate transverse shift heeling moment term from explicit caller-supplied inputs.
- Trim Moment Per Centimeter Factor Tool Calculate trim moment per centimeter factor from explicit caller-supplied inputs.
- True Wind Speed Calculator Calculate the true wind speed in knots from apparent wind speed, apparent wind angle, and boat speed.
- Underkeel Allowance Explicit Components Tool Combine explicit vertical allowances without inferring vessel, port, or navigation safety requirements.
- Vessel Airdraft Bridge Datum Gap Tool Calculate vessel airdraft bridge datum gap from explicit caller-supplied inputs.
- Vessel Displacement Fresh Salt Density Factor Tool Rescale displaced mass at an unchanged immersed volume; equilibrium draft adjustment is excluded.
- Vessel Trim Longitudinal Slope Factor Tool Calculate vessel trim longitudinal slope factor from explicit caller-supplied inputs.
- Vessel Trim Reference Midpoint Tool Linear draft interpolation at an explicitly supplied longitudinal reference.
- Vessel Trim Reference Station Offset Subtract an explicit reference station coordinate from a recorded vessel station on the same longitudinal axis.
- Wake Fraction Water Inflow Term Tool Calculate wake fraction water inflow term from explicit caller-supplied inputs.
- Wind Relative Bow Quarter Label Label an explicitly reported relative-wind sector without classifying a measured bearing or giving navigation advice.