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Marine Tools

Navigation · Bunkering · Engineering

Demo data
Marine Tools v0.5

Practical maritime tools in one clean workspace.

Plan passages, assess route conditions, calculate CPA/TCPA and UKC, prepare bunkering figures and handle common marine engineering calculations.

11tools
3data sources
0accounts required
Workspace

Toolbox

Planning aid only. Marine Tools is not approved navigation equipment and does not replace ECDIS, official charts, Notices to Mariners, vessel procedures, regulatory requirements or professional judgement.
Navigation · v0.3

Passage Planner

Create a lightweight route plan and inspect each leg.

Click the map to add a waypoint.

Plan

Distance0.0 NM
Sailing time—
ETA—
Waypoints0

Waypoints & legs

WPLatLonCourseLegCumulativeETA
Navigation · v0.5

Route Intelligence

Assess the active route against operational thresholds and available external data.

Operational limits

WeatherNot analysed
AIS trafficNot analysed
WarningsNot analysed
RouteNot analysed

Analysis

Create a route in Passage Planner, then run the analysis.
Navigation · v0.2

CPA / TCPA Calculator

Two-vessel planar relative-motion calculation for short-range planning.

Own ship

Target

Current range—
CPA—
TCPA—
Relative status—
Navigation · v0.2

UKC Calculator

Calculate available and residual under-keel clearance.

Water depth—
Dynamic draft—
Available UKC—
Margin—
Enter values and calculate.
Navigation · v0.2

Voyage Calculator

Distance, speed, time and fuel planning.

Sailing time—
Estimated fuel—
Reserve—
Required onboard—
Navigation · v0.4

Navigation Warnings

Load Coastal Navigation Warnings and NAVAREA XIX from the Norwegian Coastal Administration API.

If the public API is unavailable or blocked by browser CORS, Marine Tools shows clearly marked demonstration data instead.
No warnings loaded.
Bunkering

ORB Part I — Code H

Generate a structured draft bunkering entry from manual data.

Draft entry

Not generated
Bunkering

Bunker Distribution Planner

Distribute a requested quantity while respecting tank fill limits.

TankCapacity m³Before m³Available m³Transfer m³After m³Final %
Engineering

Fuel Calculator

Convert fuel volume, density and mass.

Engineering

Generator Load Calculator

Three-phase kVA, kW and generator loading.

Engineering

Unit Converter

Common marine unit conversions.

System

Data & Settings

Configure optional external data services without exposing secrets in the public repository.

Marine Tools API proxy

For BarentsWatch AIS and forecast data, deploy the included Cloudflare Worker and put the BarentsWatch credentials in Worker secrets. Never add client secrets to this page or to GitHub.

External data adapters

KystverketCoastal navigation warnings / NAVAREA XIXapi.kystverket.no
BarentsWatch AISLatest AIS positions via secure proxy/api/ais/latest
BarentsWatch ForecastWave / wind point forecasts via secure proxy/api/forecast
Aptos: the site requests the locally installed “Aptos” font first and falls back to standard system sans-serif fonts. No Microsoft font files are redistributed.