Tools Changelog
We are constantly improving our mathematical models and adding new tools per users requests. Here is the history of Maritime Calculator.
Sea Service Ledger
Launched a professional Sea Service Ledger for seafarers to record and track their lifetime sea service experience- duration, rank progression, overall earnings, etc.
Site-Wide Community Discussions
Integrated a dedicated comment and discussion section across all 30+ maritime calculators. Users can now share tips, ask questions, and engage with the maritime community directly on each tool page.
Fresh Water Allowance (FWA) Pro Calculator
Launched an advanced Fresh Water Allowance (FWA) Calculator featuring 6 specialized modules: Basic FWA, Draft Change, New Draft projection, DWA, Cargo Loading capacity, and Displacement Variation. Includes 9+ exam-style problems with solutions.
Try the Pro Tool →FWA & DWA Calculator
Launched a professional Fresh Water Allowance (FWA) and Dock Water Allowance (DWA) Calculator. Supports TPC and TPI inputs, preset dock water densities, real-time results, IMO load line compliance notes, and worked examples.
Try the Tool →Maritime Intercept Course Calculator
Launched a professional maritime intercept calculator for navigators. Features include closing speed analysis, vector diagram visualization, and step-by-step mathematical breakdown for chasing and meeting scenarios.
Try the Tool →Rolling Period Calculator
Launched a professional maritime stability tool to calculate vessel rolling period and Metacentric Height (GM). Includes assessment of stability thresholds and support for multiple calculation models.
Try the Tool →Distance Converter
Launched a dedicated maritime distance converter. Convert between nautical miles, km, miles, fathoms, cables, and feet with high precision.
Try the Tool →Speed Converter
Launched a dedicated maritime speed converter. Convert knots, km/h, mph, and m/s with vessel speed category classifications.
Try the Tool →Parallel Sailing Calculator
Launched a specialized calculator for parallel sailing (sailing due East or West). Features include course/distance calculations, final position finding, interactive mapping, and step-by-step breakdown.
Try the Tool →Average Speed Calculator
Launched the Average Speed Calculator for multi-leg voyages. Calculate true weighted average speed in knots, km/h, or mph. Supports Speed+Duration and Speed+Distance modes with per-leg breakdown.
Try the Tool →Maritime Currency Converter
Launched a specialized currency converter for seafarers with salary comparison (Contract A vs B), allotment calculator, and tax estimators. Works offline with 180-day rate caching.
Try the Tool →Maritime Unit Converter
Launched a multi-category maritime unit converter supporting real-time conversions for Speed, Length, Pressure, Power, Flow Rate, and more.
Try the Tool →Volume-to-Weight Converter
Launched a professional maritime calculator for cargo volume and weight conversions, supporting multiple units and cargo presets.
Try the Tool →Distance, Speed, & Time Calculator
Launched a versatile DST Calculator featuring real-time distance and speed unit conversions, ETA predictions, multi-leg passage planning, and fuel consumption estimation.
Try the Tool →Fuel & Bunker Calculator
Added comprehensive Fuel & Bunker Calculator with 4 integrated tools: Density temperature correction, bunker quantity calculator, ASTM table integration (54A, 54B, 56), and API gravity conversions.
Try the Tool →Seafarer Salary Calculator
Calculate your salary and compare it against industry standards.
Try the Tool →Marine Bunker Fuel Consumption Calculator
Added Marine Bunker Fuel Consumption Calculator.
Try the Tool →Draft Survey Calculator
Added Draft Survey Calculator with supporting initial, intermediate, and final surveys as requested by Chief Officer Charlie S.
Try the Tool →Meridional Parts Calculator
Added a Meridional Parts Calculator with on-demand features such as Single Lat → MP, Reverse MP → Lat, DMP Calculator, and Batch Processing.
Try the Tool →Sea Service Calculator
Added Sea Service Calculator that checks your total service record given the date inputs. You can download them in a nice pdf or image file.
Check Accuracy →Added Phone Number
Added phone number.
Platform Launch
MaritimeCalc is now live! Featuring high-performance tools such as Mercator Sailing, ETA Calculator, Contract Calculator, Arc to Time/ Time to Arc Converter, Swinging Radius, Lat/Long Converter, Plane Sailing Calculator, Great Circle Sailing and Compass Error Calculator.
Browse the site →