Nautical Dog Math Helper vs RigCheck

Nautical Dog Math Helper is the ultimate tool for maritime professionals, designed to simplify complex calculations you need every day on the job. Whether you’re navigating through tricky waters or performing docking maneuvers, this app makes essential maritime math easy, fast, and accurate. Key Features: • Rate of Turn (ROT) Calculation: Instantly calculate the rate of turn to ensure safe navigation and maneuvering, improving efficiency in any operation. • Turn Transfer: Quickly compute turn transfer data for safer maneuvering of your vessel, making docking and turns more predictable. • RPM and Speed Calculations: Accurate RPM and speed calculations tailored for marine environments, helping you maintain optimal speeds while staying safe. • Anchor Swing: Calculate anchor swing radius to avoid collisions and ensure your vessel stays safely anchored in varying conditions. • DST (Distance, Speed, Time): Compute essential distance, speed, and time calculations for planning and navigation during voyages. • Simple, User-Friendly Interface: Navigate the app easily with an intuitive layout designed specifically for maritime professionals. No complex math required. • Night Mode: An optimized dark mode for use during low-light conditions or nighttime operations, reducing eye strain and keeping you focused on your work. • Tailored for Mariners: Created with real-world maritime challenges in mind. Whether you’re aboard a large vessel or a smaller boat, this app is designed to support your unique needs. • Offline Functionality: Calculate and access essential data even when you don’t have internet access, perfect for use on the water. Why Choose Nautical Dog Math Helper? For those working in the maritime industry, precise calculations are critical for safe and efficient operations. With Nautical Dog Math Helper, you can quickly solve essential problems without needing a calculator or reference materials. Designed for both novice and expert mariners, it’s the only app you’ll need for common vessel calculations. From calculating your rate of turn for precise navigation to ensuring your vessel’s safety with anchor swing radius—this app covers it all, helping you make decisions faster and more accurately. Get started with Nautical Dog Math Helper today and experience how easy maritime calculations can be!

Your standing rigging keeps your mast up. Do you know when it was last inspected? RigCheck is the first and only app designed specifically for sailors who want to stay on top of their rigging condition.  Whether you're a weekend cruiser, an offshore passage maker, or a racing skipper — knowing the state of your rig isn't optional. It's the difference between a safe passage and a dismasting. Built by sailors, for sailors. SET UP YOUR BOAT IN MINUTES Tell RigCheck your rig type, spreader configuration, and rigging details. The app automatically generates every component on your boat — from cap shrouds and forestay to turnbuckles, toggles, swage fittings, and chainplates. Supports sloops, cutters, ketches, yawls, schooners, fractional rigs, gaff rigs, junk rigs, cat rigs, and more. Single, double, or triple spreader configurations. Multi-mast rigs with independent spreader levels per mast. INSPECT WITH CONFIDENCE Four professional-grade inspection checklists guide you through every check: - Pre-Sail Quick Check (15 items) — the essentials before every sail - Seasonal Inspection (40 items) — includes the nylon stocking test and swage magnification - Annual Deep Inspection (48 items) — dye penetrant testing, wire diameter measurement, tension readings - Post-Storm Damage Check (10 items) — focused on high-load damage after heavy weather Every checklist item tells you exactly what to look for, how to check it, and what failure looks like — the same knowledge a professional rigger uses. TRACK EVERYTHING OVER TIME This is what no other app does. Every inspection creates a permanent record. Every component — all 30 to 60 of them — tracks its own history: condition ratings, tension readings, inspection notes, and photos. Watch your rig age over the seasons. Spot the slow degradation before it becomes dangerous. Record standing rigging tension with your Loos gauge and track changes across haul-outs. A cap shroud that drops from 30 to 25 between seasons is telling you something important. VISUAL RIG DIAGRAM Tap directly on an interactive rigging diagram to inspect individual components. See your entire rig at a glance, color-coded by condition. Uses standard rigger nomenclature — V1, D1F, D1A, D2, D3 — so you speak the same language as your surveyor. PHOTO LOGBOOK WITH MARKUP Document your rigging with photos linked to specific components. Circle that hairline crack in a swage fitting. Annotate the corrosion creeping across a chainplate. Build a visual history you can reference at haul-out, share with your rigger, or present to a surveyor. KNOW YOUR RIG'S LIFESPAN RigCheck tracks install dates and material-specific lifespans for every component: - Wire rigging (1x19): 12 years - Rod rigging: 15 years - Dyneema: 8 years - PBO: 5 years - Stainless hardware: 20 years The app calculates your rig age and warns you as components approach end of life. No more guessing when to replace. RIGGING KNOWLEDGE BASE Learn what a professional rigger knows. In-app articles cover wire types, rod rigging, synthetic standing rigging, the nylon stocking test, swage fitting inspection, chainplate failures, common failure modes, replacement schedules, winter care, and insurance survey requirements. MANAGE YOUR FLEET Own multiple boats? RigCheck manages them all. Switch between boats instantly. Each boat maintains its own component inventory, inspection history, photo logbook, and tension records. COMPLETELY OFFLINE No account required. No subscription. No data leaves your device. RigCheck works at anchor, in a boatyard, or 500 miles offshore with zero connectivity. Your rigging data stays on your device, always accessible when you need it. There is no other app in the App Store that lets you systematically track your sailing rig condition over time. RigCheck gives you the tools and knowledge a professional rigger uses — in your pocket, every time you step aboard. Your rig is the most critical safety system on your boat. Check it.