Join The Race

Q: How do the Zoom controls work?
A: Simply slide the marker to the + or - sign. This will zoom the smaller map. You can also use you roller on the top of your mouse, whist your pointer is situated on the map itself.

Q: What's the Rhumb Line?
A: It's the most direct course between the start and finish line. It's used to calculate progress and handicap standings.

Q: How do I find out which yacht is which?
A: Roll your mouse over a yacht name in the list on the right, and its icon will light up. Click to select its path as well.

Q: Why does a track sometimes appear to go over land?
A: A fast yacht can move quite a way in 15 minutes. In that time it can travel round a headland, while the track which connects 2 time points will join them up with the shortest path (which could be over land).
At some zoom factors the base map can also appear to have shifted due to rounding errors in vector calculations.

Q: What do the different coloured lines in the ocean represent?
A: These show areas of equal depth.

Q: How come some boats' tracking data is delayed?
A: Due to occasional satellite or device transmission delays some boats may have their position delayed by a few minutes. These boats will be outlined in red both in the map view and entrants list.

Q: How do you track the participants?
Each boat participating in the Rolex Middle Sea Race is equipped with an Yellowbrick Tracker. A signal is sent from the Yellowbrick Tracking unit every 15 minutes by satellite to a server in the UK, which in turn, sends us data which will translate into information regarding the position of each participating yacht.

  1. Polar orbiting satellites collect data Polar orbiting satellites flying at an orbit of 850 km above the earth pick up the signals and store them on-board and relay them in real-time back to earth.
  2. Ground stations relay data from satellites to processing centers Over 40 antennas located at all points of the globe collect the data from satellites. Data are either received in real-time by a regional antenna in the satellites' path or stored on-board and relayed to the nearest global antennas. Today, most of the globe is covered by the real-time antenna network.
  3. Processing centres collect all incoming data, process them and distribute them to users. Once the data arrive at a processing center, locations are automatically calculated and information made available to users through the flash position tracker in our web site.