The geometric target visibility distance D g is determined as. Search for jobs related to Marine route calculator or hire on the world's largest freelancing marketplace with 23m+ jobs. Nautical Calculator is an easy to use app built specifically for your iPhone and iPad that helps you solve the equations and conversions typically associated with marine navigation. If you wish to find miles per hour based on knots then you multiply. A tooltip will be shown, representing the beginning of the route. Call with any questions!. Nautical charts are a f undamental tool of marine navigation. Elbows should be aligned to the shoulders with the forearms parallel to the body at about shoulder-width distance. Our easy-to-use distance calculator gives approximate berth-to-berth distances between member ports themselves and also between member ports and some key regional ports. -the eccentricity of the spheroid (a - the length of the major semiaxis, b - the length of the minor. MM) or degrees. Seametrix serves over 30,000 ports and terminals, offering fully customisable sea routing combinations with the most accurate sea distance results by far. Found 1686 ship suppliers. Swim Time: Time it took to complete the swim in seconds. You might be able to see where different lakes and rivers are located and identify any resources that are available on land nearby, from docks and. The development of marine displacement calculations has had a profound impact on society and technological advancements. 62137 miles. Use the Links below to select a category of. Review by Elena Opris on March 13, 2013. The Formula and Variables Description. The Marine Navigation App provides advanced features of a Marine Chartplotter including adjusting water level offset and. The formula used in the Calculator is as follows: SD = 0. It allows you to measure distances between points and plan routes accordingly. A generally slow motion with a gradual turn towards the northwestward and then northward. The symbol for kilometer is km. DESCRIPTION. Whether you need information for a vessel, a port or at the global level, there’s a service to match your need. Burnt Ground (Long Island) Stuart Manor (Exuma) 73. Share. All markers are draggable and seperately removable. Sea-Seek Distance Calculator Navigation tools. As an example using "Height in Feet" in the calculator. Boats with deeper draft may have to select longer routes to avoid shallows. Calculates the shortest distance between a list of locations. To find the distance between two points we will use the distance formula: √ [ (x₂ - x₁)² + (y₂ - y₁)²]: Get the coordinates of both points in space. Now you are able to use the tool to plan a voyage beforehand or en-route. Check if your GPS plotter model is compatible with advanced features and make sure it is running the latest software. com. ) Solution: Slip (percent) = Engine distance – ship’s distance/ Engine’s distance X 100. Online calculator to convert nautical miles to kilometers (nmi to km) with formulas, examples, and tables. Calculate Distance. Port Distance Calculator. A model of fuel consumption usually assumes its dependence on the ship propulsion system and hull characteristics, the sea state, and the ship speed and its heading angle against the waves [13,. It can still be potentially useful in planning a sailing or boating route, however. 75) * 5 = 240 miles. It offers detailed marine charts, waypoint management, and distance calculation tools. Sample task: convert 5 to kilometers. 42 to get. How to choose Departure and Arrival points on the map with calculator's target buttons. Zoom and drag the map to find the location of marker 2. Live Vessel Finder of Marine Traffic map for tankers and bunkering vessels with predicted time of arrival and next port of call. 5% of the value of the boat. Port to Port Sea Distance Calculator. This distance calculator will use the "as the crow flies" distance. Use the scale indicator to track distance on a chart. Marine Park Empire 1 is a game that gives you a lot of joy. Find the shortest route, ETA, days in sea, bunker ports along the route. MarineTraffic Live Ships Map. You travelled 29 nautical miles to your destination. Select Map by Ship Type. nautical miles from port to port. 15 * D * a^0. The ports and routing points contained within the Distance Tables are common to all our software products. d = √ (2 * R * h + h^2) Where: d represents the distance to the horizon. Home; Marine Distance Calculator; Top SEO sites provided "Marine distance calculator" keyword . Assume a vessel travels at a speed of 20 knots. t = d / v. 2 TABLE OF CONTENTS . The ship distance calculator is a convenient tool to make these calculations. , 90 = 1 min 30 sec), and the. Map of ports all around the world, Enter two ports, choose speed and find out how long it will take. 50. Baile na Lorgan (Monaghan) Baile Coimin (County Wicklow) 106. Only Netpas Distance provides coordinates to coordinates distance with other fruitful information. Calculating boat speed is fairly simple when you know this. Calculating marine distance is tedious; this online calculator will aid you in calculating distance between departure and destination. World sea ports database, sea transportation, marine and ports market place, sea distances and routes. ConclusionCAP OF GOOD HOPE VS SUEZ CANAL-PART 3 TARGET A SAVING AND GET A LOSS 1) REMINDER ON SPEEDER VESSEL TO KEEP A TRANSIT TIME OF 23 DAYS Reference : Marine Distance calculator. Following are 3 important parameters that are most often required to be calculated by marine engineers for record-keeping: 1. 200' E: Abu Qir: Egypt: EG0002: 31° 19. 27km. Let’s consider a sail with a foot length of 12 feet and a luff height of 14 feet. Bon Accord. September 18, 2012 ~ Sailing navigation begins--as does all of navigation--with a good grip on how to use time, distance and speed. Find your destination easier using DistanceCalculator. To get maximum line of distance you need to enter the height of the antenna. SEA DISTANCE CALCULATOR. North Pacific Ocean » 10. Swim Speed: Average speed of the swim in meters per second. Yangan. No single factor is a silver-bullet to extend your communication range. Here’s how it works: given the total distance (D) of the journey in nautical miles and the average speed (S) of. , time in hours, minutes, or seconds, and distance in nautical or statute miles (or yards if desired, and if speed is i. Map with JOSM Remote; View. Address: 4021 West Walnut Street. 43km. Nautical Calculator is an easy to use app built specifically for your iPhone and iPad that helps you solve the equations and conversions typically associated with marine navigation. 1375. 7. Speed = Distance/Time. It's free to sign up and bid on jobs. A tooltip will be shown, representing the beginning of the route. Each variable represents a specific aspect of the pressure test: SD: Safe distance, measured in meters. Results from the CBS Content Network. Keep in mind, this is just a rough estimate, and you can get a better idea of your monthly payment, by using a boat loan calculator. 09. crow's flight distance calculator. For example, 1:80,000 or 1/8000 - means that one unit (such as an inch) on the chart represents. Straight Sailing Marine Distance Calculator. You are free to lead the vessel using any routes. Phone: (479)339-4795. Cruising Distances in the Pacific Northwest From/To Olympia, 47° 02' 46. Zoom and drag the map to find the location of marker 2. Table 1 is the distance range and has three targets at the 200, 300, and 500-yard lines. calculate Calculate sea route and distance for any 2 ports in the world. D: Internal diameter of the vessel, measured in. To find the speed of a vessel on a measured nautical mile in a given number of minutes and seconds of time, enter the time in total seconds (i. This distance and driving directions will also be displayed on an interactive map labeled as Distance Map and Driving. Names and locations used in this application are from the Geographic Names Information System (GNIS), the federal standard for geographic. Male 17-20 21-25 26-30 31-35 36-40 41-45 46-50 51+ Female 17-20 21-25 26-30 31-35 36-40 41-45 46-50 51+KwaZulu-Natal (South Africa) Distance Chart (Distance Table): For your quick reference, below is a Distance Chart or Distance Table of distances between some of the major cities in KwaZulu-Natal (South Africa). 514444444444444 metres per second (m/sec) one knot (kn) = 1. Deliver the. Related Read: 8 Engine Terms Every Marine Engineer Should Know – Part 1. Nautical And Statute Mile Converter. The nautical mile calculator is a handy tool to help you calculate the distance from and to nautical miles (nmi). Sunrise and sunset were about 1 hour later on Apr 28, 1974 than the day before. Johannesburg (Gauteng) Soweto (Gauteng) 22. nmi: is the symbol of nautical miles in. It is developed under consideration for user. This line of sight calculator calculates how far the horizon is from an antenna placed at a particular height. The product will equal the antenna’s communication range in miles. 60934 kilometers. This principle comes from the fundamental definitions of speed and time in physics. MM) or degrees. Calculate the marine distance between two ports. You can get the distance between cities, airports, states, countries, or zip codes to figure out the best route to travel to your destination. Radar range calculator In a radar system, the radar range is the maximum distance (Rmax) beyond which the target/object can no longer be detected and correctly processed. View vessel details and ship photos. from the list. Therefore, in order to calculate the time, both distance and speed parameters must be entered. We show ships current positions and marine traffic through the embedded maps of. 94km. We provide a range of products and services to meet our customers' needs and are willing to discuss any topic relating to distances or ships'. Software Informer. AtoBviaC Ltd is a United Kingdom based company owned by Chersoft Ltd providing marine distances to all sectors of the maritime industry that are involved in the charting or management of sea-going ships. , C = 220. The nautical mile calculator is a handy tool to help you calculate the distance from and to nautical miles (nmi). Latitudes and longitudes may be entered in any of three different formats, decimal degrees (DD. For example, a 12V battery with a capacity of 100Ah has a total energy storage of 1200 watt-hours (Wh). Melbourne to Adelaide. our boat dock (3637 Del Prado Blvd S, Cape Coral, FL 33904) in close proximity to open waters. McDonough Marine Calculator can help calculate the distance of your next barge trip. Queensland (Australia) Driving Distance Calculator to calculate distance between any two cities, towns or villages in Queensland (Australia) and Mileage Calculator, Distance Chart, Distance Map. To find the distance between two places, enter the start and end destination and this distance calculator will give you complete distance information. Sunrise and sunset were about 1 hour later on Apr 25, 1971 than the day before. It's free to sign up and bid on jobs. - Advanced Map Options. Time Zones Map. Nautical Calculator. Accurate sizing is crucial for safety and performance in the demanding marine environment. To find the speed of a vessel on a measured nautical mile in a given number of minutes and seconds of time, enter the time in total seconds (i. Ships Current Position. Find locations of ports and ships using the near Real Time ships map. Call with any questions! Desktop 丨 Web 丨 Ios 丨 Android 丨 Ipad. Each navigation method is calculated by a different server, with different data. Please select departure and arrival ports from the dropdowns. To find the speed of a vessel on a measured nautical mile in a given number of minutes and seconds of time, enter the time in total seconds (i. 27km. Marine Weather Calculators. New Zealand Driving Distance Calculator, calculates the Distance and Driving Directions between two addresses, places, cities, villages, towns or airports in New Zealand. time/speed/distance calculator flight calculator advanced time calculator whiz wheel wind chill calculator sunset/sunrise calculator. For speed, it can convert knots to miles per hour, kilometers per hour, feet per second or meters per second. Step 1: User Input The user enters the two necessary parameters into the calculator: Distance and Speed. This is done easily using a free online converter such as ours, or your handy old-school calculator or a mobile calculator app. Map with JOSM Remote; View. distance between points calculator. Format. How Far Is It? Distance Calculator now supports locations worldwide! Distance calculations are based on the great circle distance between points, and do not account for differences in elevation. For example, to anchor in 10 feet of water, you would pay out 70 feet of line. MarineWaypoints. Determine the distance traveled between port of origin and port of destination using Dataloy or other nautical distance resources. GEGCalculators. Sailing Distance Calculating Tool with support for multiple locations. The distance between two points on a 2D coordinate plane can be found using the following distance formula. This sail would therefore have an area of 84 square feet. Instant results (800) 573-5519 info@interstateaviation. Walking the dividers enables you to measure distances greater than the span of your dividers. Tramper Business for Company Co-Working Application with various functions such as Contract, Estimation, Operation, Address book, Statistics and more. Coalhurst. 0°N 121. If the calculation cannot be done immediately, you will see the window below: Depending on the complexity of the calculation, the answer will be available in a few minutes:Nautical Calculator is an easy to use app built specifically for your iPhone and iPad that helps you solve the equations and conversions typically associated with marine navigation. GEGCalculators. Manning. Constants | Gas | Diesel. 41" N, 122° 54' 18. Calculates the shortest route between a list of locations, and returns the route as a. Email: contact@boatsafe. Canada Driving Distance Calculator to calculate driving distance between cities, towns or villages in Canada and Mileage Calculator, Distance Chart, Distance Map. The calculation of cruising distances were determined from NOAA and Canadian Hydrographic Service digital charts in BSB format using the Fugawi Marine ENC™ navigation application. Please log in with your VesselFinder account and refresh this page. Sailing Distance Calculating Tool with support for multiple locations. - Satellite Overlay with SonarChart Shading. For example, in a Mercator projections segments far away from the equator represent less actual distance than segments near the equator of equal length. Marine Online is a B2B e-commerce platform for shipping services including chartering, getting bunker price, ship supply, port agency, crewing, ship sale and purchase, marine services & finding marine suppliersUse online nautical depth calculator to calculate marine depths, it takes care of nautical charts which is graphical representation of maritime area and adjacent coastal regions. Availability. 654. 000 distances. More than 4000 sea ports. 68780985710119 feet per second (ft/sec) Example Calculation. Speed = 45 mph. AtoBviaC marine distance calculations Get accurate and reliable marine distances and route calculations with our range of AtoBviaC products - the easiest way to get the distances between ports worldwide. Therefore, the answer is 10 inches. 40. Melbourne to Perth. Propeller Sizing Calculator. Step 1: Enter shaft horsepower value P = 3000 hp. Searates provides Online Tool for Distance Calculation & Shipping Rates Between Air & Sea Ports. If you’re standing up and you’re about 6 feet tall, let’s say your eyes are sitting at about 5. Discover information and vessel positions for vessels around the world. Combine this information with the fuel cost tool to find out how much it. The map can be centred around any of the below starting points - click your home base and get started! :) TOP TIP: If you’re after a leisurely sailing holiday (doing 4-5. Double click your end destination in order to see the. 1: Rapid Assessment of Ship Emissions in the National Context for more information on the different fleet components). Marine Distance Calculator. Nautical Calculator. ”. This app is the fine…A determination as to whether the track is a yard or meter track must be made and the track measured to ensure accurate distance prior to conducting the PFT. The How Long to Walk A Mile Calculator result shows how long it will take to cover your inputted distance at your proposed pace, expressed in hours and minutes. , 90 = 1 min 30 sec), and the calculation will produce speed in knots. You can easily calculate/measure the distance between a vessel and any other Waypoint as defined by you. The Voyage Planner is an efficient tool of Live Map Toolbar, that will help you estimate profitability, plan and track voyages, all in one place. Netpas Distance provides 12,000 ports information with their locations and offers 72 0. 43km. Discuss new technologies for long range communication. 0. What’s Distance & Time? It’s a logistics application created to estimate distances and times between sea routes under particular. Changes are coming to the annual rifle qualification, and they’re coming soon. Stella Maris (Long Island) 61. The radio uses the frequency range of 156. Visit the home page atobviaconline. The distance will be calculated then displayed below the map in miles or kilometers. To use the calculator, simply type in your antenna height above ground in the appropriate window below and click the "Compute" button. A nautical league was 6,080 yards - or three nautical miles (each league being 6,080 feet). The distance calculations and bearing are based on a true spherical model. When local standard time was about to reach Sunday, April 27, 1975, 2:00:00 am clocks were turned forward 1 hour to Sunday, April 27, 1975, 3:00:00 am local daylight time instead. » Junior Colleges. You can review many of the previous. The depression is moving toward the west-northwest near 2 mph (4 km/h). Port Distance Desktop Edition helps you to obtain precise distances between ports, quickly and accurately estimate voyage costs and profits, and effectively manage budget records. Personal section. Marine Online is a B2B e-commerce platform for shipping services including chartering, getting bunker price, ship supply, port agency, crewing, ship sale and purchase, marine services & finding marine suppliersThe routes selected by the author are suitable for boats up to 48 inches draft. ? Repeat the process to add as many waypoints as. Chateauguay (Quebec) Quinte West (Ontario) 329. That means;Apr 27, 1975 - Daylight Saving Time Started. More than 4. Preview of Nautical Sea Distance Calculator Result. For the calculation of the course angle the following formulas are used: 1. N etpas Distance is a Port Distance Table providing 12,000 ports and 0. Each port and waypoint is carefully placed based on actual ship traffic and thorough analysis of routing options. Male 17-20 21-25 26-30 31-35 36-40 41-45 46-50 51+ Female 17-20 21-25 26-30 31-35 36-40 41-45 46-50 51+ Max 2:46 2:44 2:45 2:48 2:51 2:58 3:07 3:11 Max 3:25 3:19 3:16 3:18 3:24 3:31 3:45 4:01The Distance Tables are continually updated to reflect changes to routes as necessitated by Notices to Mariners and other regulatory requirements, together with the regular inclusion of new ports and terminals. Enter the latitude and longitude information for origin and destination, paying attention to the hemisphere selection. MarineTraffic Online Services. FSW: 6. The routes selected by the author are suitable for boats up to 48 inches draft. Calculates the speed in knots and the distance in nautical miles at shipping. Simple, powerful and effective tools tailored to your needs. Melbourne to Darwin. nautical distance calculator. Elk Point. To calculate distance on map, click the map two or more times to create polylines. The MV-22 Guidebook is a comprehensive document that provides information on the capabilities, operations, and safety procedures of the MV-22 Osprey aircraft, a versatile and powerful tiltrotor platform used by the United States Marine Corps for assault support missions. Then optimally the shortest and quickest route is constructed. e. It is recommended that you use a scope of 7:1, meaning that for every foot of water depth, you should use 7 feet of rode. Timmins (Ontario) 675. Of course, we will also deliver the rental boat to your house if you want to start from there. New South Wales (Australia) Distance Chart (Distance Table): For your quick reference, below is a Distance Chart or Distance Table of distances between some of the major cities in New South Wales (Australia). In this case, the unit of distance on the chart is inches, so we need to convert the actual distance to the appropriate units, such as nautical miles or statute miles, based on. 000 distances. Additionally, all of the calculation tables, a six-volume set of sight reduction tables, and the full text of the "The American Practical. The official mileage distance for calculating travel is. The order of the points does not matter for the formula as long as the points chosen are consistent. It offers detailed marine charts, waypoint management, and distance calculation tools. Read the following instructions and be ready for making conversions with the help of our calculator. LAKE SUPERIOR SHIP TRAFFIC LIVE MAP. 455. Distance and route computation. It is photographic representation of marine are and shows various marine aspects such as depth of water, height of land, seabed features, coastline details and navigational hazards, use this online nautical chart converter and make your. The Dataloy Distance Table is highly acclaimed for its extensiveness and accuracy. The average speed for walking a mile is 15-20 minutes. This uses the ‘haversine’ formula to calculate the great-circle distance between two points – that is, the shortest distance over the earth’s surface – giving an ‘as-the-crow-flies’ distance between the points (ignoring any hills they fly over, of course!). The Google Map Distance Calculator helped us a lot when performing location measurements on day-to-day ISP operations. Discover information and vessel positions for vessels around the world. Draft: is the vertical distance between the waterline and the bottom of the hull (in meters or feet). When done: On the card at the bottom, click CloseDownload Now. They are also used on every NavySuppose an electrical system with a 120 V source and allowable drop of 3%, a copper cable with a maximum temperature of 50°C, operating at 200 amps at DC. The Seatime Calculator uses a simple but effective formula: text copy code Seatime = (End Date - Start Date) - Break Periods. Example. INSARG. MapQuest Distance Between Two Points. The "End Date" and "Start Date" refer to the respective dates of commencement and conclusion of the sea service. Below is the Formula to Estimate Maximum Engine Fuel Consumption. Pull-ups and push-ups are essential to building the upper body strength necessary to win battles. Boat speed units. Marine Super Store is a leading yacht & boat chandlers with an unbeatable range of sailing equipment, clothing & marine. The simplest and most commonly used method for gauging the distance of various objects on land and at sea is the thumb method. Abu Marine Terminal: Malaysia: MY0154: MYABU: 6° 7. Enter the distance value you want to convert. The answer it gives is the Take-off Distance Required. 2. . Model Boat Life Size Scale Calculator. The OOCL Carbon Calculator demonstrates OOCL’s commitment to environmental care and will help our customers achieve the lowest possible carbon footprint in their end-to-end supply chain. " command in your browser window to download the page to your computer. Knot is a nautical speed measure. The displacement and the speed of the vessel, combined, indicate the momentum of the vessel. Entering degrees, minutes and seconds is simple. 27km. The calculator will automatically compute the 5 th variable. For example, if you buy a boat worth $100,000, expect to pay between $1,000 and $1,500 per month. You also have to score higher, as of 2019. Container LinesActual Distance = 4 inches × 1:25,000. Distance = Speed x Time. Caher (Tipperary) Muine Bheag (Carlow) 72. Chart carriage is mandatory on the commercial ship s that carry America s commerce. Parallel lines have the same slope, to find the parallel line at a given point you should simply calculate the. ( A nautical mile equals 1852 m. The Travel Time by Boat Calculator works based on the simple principle of “time equals distance divided by speed”, commonly written as T = D/S. SEA DISTANCE CALCULATOR. The calculation of cruising distances were determined from NOAA and Canadian Hydrographic Service digital charts in BSB format using the Fugawi Marine ENC™ navigation application. First zoom in, or enter the address of your starting point. Nautical miles to kilometers conversion example. Nautical depth is measures in feet, meters and fathoms. MARINE ENGINEERING & OCEAN ENGINEERING CENTER (Calculators, Applets, Spreadsheets, and where Applicable includes: Courses, Manuals,. 40 lb. The PTT (Push to Talk) button. 655/mile. (4. Straits Canals Gulfs Bays Seas Oceans Rivers Lakes Sounds Fjords Reefs Lagoons Capes. Free E6B Calculator, wind triangle solver, distance, speed and temperature converters ONLINE, in just few clicks. Speed in knots or m. Entering the From, To and optionally a Via port name is made easy with the use of drop down lists which automatically complete the port name as you type. To use the calculator, input four of the five variables. distancesfrom. g. It is basically designed for easy use and user friendly interface with powerful tools. Then draw a route by clicking on the starting point, followed by all the subsequent points you want to measure. The Dataloy Distance Table is highly acclaimed for its extensiveness and accuracy. Waukegan Great Lakes Ludington South Haven Manitowoc Two Rivers Wilmette Association Columbia Park Manistee Chicago Kewaunee Calumet Harbor Michigan City Indiana Harbor Algoma Green Bay Gary Harbor Frankfort Sturgeon Bay Oconto Traverse City Menominee. You can click through to FastQuote, our online quotation tool, to select a cable that meets your size and specification requirements. Driving distances between two cities. - Satellite Overlay with SonarChart Shading. Port To Port has been developed to be a highly functional tool for obtaining marine distance and routing information. Nautical Calculator is an easy to use app to help solve the equations and conversions typically associated with marine navigation and includes celestial calculators, conversions calculators, distance calculators, logarithm and trigonometry calculators, and sailings calculators. Latitudes and longitudes may be expressed in either decimal degrees, by filling in the degrees field only, or as degrees and minutes, by. You can also use this nautical mile calculator to calculate the traveled distance based on vessel speed and. h. d = √ (2 * R * h + h^2) Where: d represents the distance to the horizon. Port Distance Desktop Edition helps you to obtain precise distances between ports, quickly and accurately estimate voyage costs and profits, and effectively manage budget records. Ireland Driving Distance Calculator to calculate driving distance between cities, towns or villages in Ireland and Mileage Calculator, Distance Chart, Distance Map. DD), degrees and decimal minutes (DD:MM. The output of the information can be done in form of the table, image and even printed directly. The Calculate buttons and the Clear Values buttons only effect the individual calculator associated with that button, not all values on. GEG Calculators is a comprehensive online platform that offers a wide range of calculators to cater to various needs. Navigation tools. 000. Get ready to jump in the water as you run the most exciting and wild marine park ever in the latest and greatest sea-life simulation, all in 3D. 52. Marine Port Distance Calculator. Regions . 1. Maroon. Salt Water Fish Weight Estimator/Calculator. 9 North, longitude 121. Accurate sizing is crucial for safety and performance in the demanding marine environment. 1 West. In this article, you will learn how to use the Voyage Planner and start planning your vessel’s voyage. Calculate the distance, fuel consumption, and cost of your next boating trip. Nova Scotia (Canada) Driving Distance Calculator to calculate distance between any two cities, towns or villages in Nova Scotia (Canada). More than 4. In order to enable it, right-click anywhere on the Live Map, then select the Route from here option. Calculate the Latitude and longitude of the vertex on the great Circle track. To find the distance between two places, enter the start and end destination and this distance calculator will give you complete distance information. 566. In conclusion, the marine calculator serves as an. The guidebook covers topics such as landing zone selection, aircraft. The calculator helps to determine the estimated time it will take to travel a specific distance at a certain speed on water. Newport Landing. How to choose Departure and Arrival points on the map with calculator's target buttons. This is the distance that should be maintained for safety during the test. The Distance Calculator can find distance between any two cities or locations available in The World Clock. 5), where L is the overall length of the vessel. OpenCPN: OpenCPN is a free and open-source chartplotter and navigation software available for various platforms, including Windows, macOS, and Linux. To start, click on the map once to plot the centre point then click one or more times to plot the destination points.