tgf1 wrote:
Paul, congrats on another successful otw adventure

Looks like a nice day for rowing. Any estimate of pace/spm? As one who only ergs would ask.
Except under ideal conditions, i.e. flat water, no wind, pace and rate don't have the same significance OTW as they do OTE. They get adjusted to meet the conditions and I think that a lot of it is a result of subconscious action by the rower. For example, with a direct headwind, the stroke is raised to help counteract getting pushed backwards by the wind and vice versa with a tail wind. Actually what is usually changed is the drive/recovery ratio. The rate goes up in a headwind because the recovery time is reduced to minimize momentum loss. With a tail wind a longer recovery lets you get more run for each stroke, taking better advantage of the push from the wind.
If the wind is several degrees off a direct headwind, it is necessary to pull harder with the leeward oar to keep from veering off course. Off center tailwinds create a similar but reverse pattern. The stern will slew to the lee and extra pull with the windward oar is needed to compensate. With the apparent wind square on amidships, the boat will tend to drift off course sideways, so that it is necessary to head just a bit to the windward to keep on course.
All of the wind effects depend on the design of the boat. The lower the profile of the boat, the less effect there is from the wind. Boats designed for rough water generally have a high profile compared to a flat water racing shell because the higher freeboard provides more stability even though it makes for a bigger wind effect.
Since pace is the inverse of speed, it depends on which speed is meant, speed through the water (which can be measured with a speed coach) or speed over the bottom (which can be measured with a GPS unit). Flat water gives the rower a chance to work at optimum pace. With rough seas, energy is lost fighting the waves and having to raise the blades higher to clear the wave tops. Optimum pace is unattainable on rough water. It is rare to have smooth water and no wind in open water races and the conditions vary along most courses and with time as well.
Clearly there is a whopping difference between OTW and OTE rowing. The exercise is similar, but the execution is like night and day.
Bob S., beached OTW rower.