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Surf Boats:

Which unit is suitable for my surf boat?

Nielsen Kellerman rowing products have been proven reliable by thousands of rowers around the world. Now Surf Boats can take advantage of thes products. 

Our products are reliable & made for the harsh punishment that paddlers can put them through, including being waterproof and they float. 

Stroke Coach Overview

For Rating, number of Strokes & elapsed Time, use our new StrokeCoach Surge (no wiring needed)

The StrokeCoach you love, updated with 21st Century technology! The new StrokeCoach with Surge Rate provides every StrokeCoach function – stroke rate, stroke count and elapsed time – with absolutely NO wiring or magnet required.

NK’s proprietary stroke algorithm, combined with a sensitive three-axis accelerometer, gives immediate accurate stroke rating in any boat – rowing shell, dragon boat, canoe or kayak – and in any position. You can even rest it on the floor of the boat between your feet since it is completely waterproof. 

Visit StrokeCoach page


SpeedCoach GPS - Model 2 Overview (Training Pack Model) 

For Rating, Elapsed Time, Speed, Splits use our SpeedCoach GPS2 with Training Pack (no wiring needed). 

The rating is calculated using our patented 3 axis accelerometer & speed from a 5 Hz GPS (5 times more accurate than a watch)

  • Programmable Workouts 
  • Heart Rate (requires upgrade for Heart Rate)
  • Improved Data Recall and Interval Summaries -- 25 hours of memory Upgradeable Firmware
  • Clock 
  • Auto Backlight 

Includes: Protective Bumper in personal choice of color, Quick-Wrap. Mounting Strap and Dock , Battery Charger, Lanyard and Carry Pouch.

 The  NEW SpeedCoach GPS Model 2:


  • Works in any boat without wires –
  • Precision 5Hz GPS module for  accurate and responsive speed
  • Surge Rate technology for stroke rate
  • Is also compatible with impeller in any wired boat
  • Features a 25-hour rowing memory & improved data recall with interval summaries
  • Displays clock time  – auto set from GPS
  • Has a rechargeable battery; lasts multiple sessions
  • Clearly visible day or night with the high-contrast/high resolution monochrome display with automatic LED backlight
  • Over the air wireless firmware updates (LiNK feature coming soon)
The SpeedCoach GPS Training Pack Adds these Software Features:
  • Programmable workouts based on time or distance - easy to set up, save and run
  • Data recall tied to workout sessions for in-depth review of pieces
  • Heart rate (compatible with any Bluetooth Smart HR Belt – purchase option)
  • Stored data can be exported wirelessly to PC, Mac or Web (LiNK feature coming soon)

Visit SpeedCoach GPS2 Traing Pack page


 Comments from Peter Spence (Sweep - Palm Beach SLSC) SpeedCoach GPS.

 “I love my SpeedCoach GPS Unit! I purchased and started using my Speedcoach mid last season and straight away I found it to be an excellent tool to use in my crews training sessions in the boat. Although the Speedcoach has many functions I mainly use it for Stroke Rating & Boatspeed and found that it is a very effective unit to use when training in flatwater either with base fitness work early in the season or race piece work later in a season – it keeps the crew honest, allows me to monitor rating and speed without having to take my hands off the sweep oar! You can use the Speedcoach out in the chop although sometimes the readings are all over the place as you go up and down swells as the GPS unit loses the signal. We now have 3 of the Palmy sweeps that have a Speedcoach GPS Unit and will be using them in all our on water sessions in the season ahead.”

Peter Spence - Palm Beach SLSC

For an inboat audio system, use the CoxBox Mini.

Please contact us if you require any information on NK Products for Surf Boats.

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