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TUR is an exceptionally simple concept for racing with standard cruising boats, either as an independent TUR event or as a separate class within a NOR Rating regatta.
TUR assumes that the boat owner determines the rating for their own boat using just a few boat measurements.
TUR Sailors
Target group: TUR is for sailors who enjoy taking a trip with family, friends, or solo.
Aspiration: TUR is for sailors who are tempted to try a bit of friendly racing.
Accessibility: TUR is for sailors who are unsure about how it works and what is required.
TUR Boat
Usage: TUR boats are boats used for cruising.
Specifications: They are typically 25–45 feet, have a fixed keel, inboard engine, galley/cooking space, marine toilet, and 4 or more berths.
Condition: They are cruise-ready with fuel, drinking water, and everything else that belongs to standard cruising equipment.
Safety: They must have life jackets for everyone on board.
Sails: They carry only 1 mainsail + 1 headsail. Additionally, they may use 1 "specialty sail", such as a spinnaker, gennaker, code sail, or similar.
What is Required?
Owner measurements: The boat owner determines the boat measurements themselves: hull length, sail area, and boat weight, as well as model year, propeller type, and potentially spinnaker area. See "Practical Tips for Boat Measurements" below.
Rating calculation: The boat owner finds their own TUR number from the boat measurements using NOR Rating's TUR calculation program.
Timekeeping: Each boat records its own start and finish times, or the organizer does this. The calculation program shows the elapsed time.
Correction: Elapsed time is corrected in the program based on the TUR numbers, ensuring that the differences in the boats' speed capabilities are taken into account.
Compensations: Older boats and boats with fixed propellers are compensated for this.
Results: The organizer determines how TUR numbers, elapsed time, and corrected time should be reported and compiled into a results list.
The TUR Number Calculation Program
How it works:
Speed capability: The TUR number expresses the boat's speed performance. A low number (i.e., below 100) corresponds to a fast boat. A higher number corresponds to a slower boat.
Formula: Corrected time is calculated as follows: Corrected Time = 100 x Elapsed Time / TUR number. The program calculates this automatically.
Class restrictions: Boats cannot race with their TUR number in the same class as boats using a NOR Rating certificate.
Rating risk: Because the calculations are based on very few boat measurements, some boats risk getting an unreasonable rating—especially boats that are not typical cruising boats.
Stepping stone: The TUR concept provides an introduction to big boat racing. No one stays here year after year. The next step is to have the boat registered and measured, and then race with a valid NOR Rating certificate.
Calculator for TUR numbers
Practical Tips for Boat Measurements
Data entry: Fill in the white boxes. Delete the existing numbers and enter your own data.
Hull length: Hull length must not include any bowsprit or bow platform.
Conversion: Hull length specified in meters is usually accurate. If you need to convert from feet, you can use: length in meters = number of feet x 0.3048.
Decimals: Use a comma (,) as the decimal separator.
Sail area: Sail Area = Mainsail + Headsail.
Weight: Boat weight is intended as "dry weight"—meaning the weight when the boat is empty.
Age compensation: Age compensation is calculated by the program based on the production series year/model year. If this is unknown, estimate the year of construction.
Propeller: If the boat has a fixed propeller that is locked during racing, the speed loss is compensated for in the program by using the corresponding radio buttons. A propeller that feathers or folds is considered a folding propeller.
Specialty sails: Spinnaker, gennaker, code sail, or other "specialty sails" must not be included in the general sail area. Only 1 such sail can be used during the race. The area for this is entered as the spinnaker area. The rating for a boat with a spinnaker must then be used if the sail is deployed.
Data sources: Retrieve boat measurements from the internet, sales brochures, or from a similar boat in the open ORC certificate database.
Storage: Save your boat measurements in a place that is easy to find next time.
Organization
The regatta organizer determines the detailed arrangements for the race and provides the information that participants need to join.
Organizer timing: If the organizer records the times and participants have submitted their TUR number, the organizer can calculate corrected times and set up a results list.
Self-timing: If the boats time themselves, they can calculate their own corrected time and report it to the organizer. The organizer can then set up a results list.
NOR Rating offers this concept to any organizer but does not accept any responsibility for a TUR event beyond this.
Two Calculators
(To scroll up and down over the calculators on a narrow mobile screen, it is easiest to slide your finger along the right or left edge).
The calculator "TUR-tall & Korrigert tid" (TUR number & Corrected time) shows the effect of different TUR numbers when calculating corrected time.
The calculator "TUR-tall & og 2 konkurrenter" (TUR number & 2 competitors) calculates when Boat B must cross the finish line to tie with Boat A.
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