Interpolation Methods vs Should I Sail

INTERPOLATION METHODS A precise and lightweight tool for linear and bilinear interpolations — built for engineers, students, and technicians. Simply enter your known data points and get the interpolated value instantly. The app displays the formula used, your input data, and the final result, ensuring full transparency in every calculation. Designed for both academic and professional use, Interpolation Methods helps you stay organized and efficient: + Save and reload your interpolation cases for future reference + Switch between languages and number formats that match your region + Customize the interface with multiple color themes + Enjoy instant results with a clean, intuitive layout Whether in class, in the lab, or on the go — perform accurate interpolations in seconds, without spreadsheets or internet access.

Weather apps show you the wind. Should I Sail tells you yes or no for your boat, and why. Tap anywhere on the sea. You get a verdict for the hour you picked: Yes, Challenging, Requires Safety Gear, Only go if you must, or No. It is scored for the boat you sail, so a 12 m cruiser and a RIB get different answers in the same conditions. Under the verdict, one line says what drove it: "Waves 1.1 m, more than the 1.0 m your boat is comfortable with." Free to download and free to use every day. Sign in for a free account and you also get 3 Pro Days to try everything below. THE FORECAST Hourly marine weather for any point of sea in the world, 9 days ahead: wind and gusts, wave height and direction, swell, current, visibility and rain. Flick through the days and hours and watch the verdict change. The best window for the week is picked out for you. ANY BOAT Jet ski, RIB, motor cruiser, dinghy, keelboat, catamaran, offshore yacht. Pick yours once and every verdict is tuned to it. ON THE WATER Your boat follows live GPS with heading and speed over ground. Depth shading and contours, distance rings around you, a measuring tape, and the OpenSeaMap nautical overlay with buoys and hazards. Record your track in the background; it keeps going with the screen off and stops by itself when you reach shore. DEPARTURE CHECKLIST A pre-departure checklist built for your boat type: weather, documents, safety gear, engine, rig, deck, crew. Tick it off at the dock, add your own items, and it works with no signal. PRO: plan at home, stay safe on the water Unlimited forecasts. A route planner that scores every leg and shows your arrival time. Change alerts that tell you when Saturday's forecast turns. Saved spots and routes on every device. Draw on the chart. Unlimited markers. Anchor Watch with a drag alarm. Save a track as a route. Pro is 149.90 ₪ a year in Israel (about 12 ₪ a month; local pricing elsewhere). Cancel anytime, 3-day money-back guarantee. Every free account starts with 3 Pro Days, no card needed. MADE FOR EVERY CREW 16 languages including Hebrew and Arabic with full right-to-left layout. Large text, high contrast and bold modes. Have a code from your sailing club or partner? Enter it for bonus Pro months. Terms of Use: https://shouldisail.com/terms Privacy Policy: https://shouldisail.com/privacy