Can You Sail in Less Than 5 mph Wind on the Thames… Against a Strong Current?
Picture the scene.
The river is moving nicely downstream, the trees are barely rustling, and your burgee (if you remembered to look at it!) is hanging like a wet sock.
You launch anyway… because, well, it looks like a sailing day.
🚤 When the River Wins (and the Wind Doesn’t Show Up)
On the River Thames, current can easily be 2–3 mph or more depending on conditions.
If your wind speed is under 5 mph, you’re already on the edge.
Now here’s the key point:
👉 If your boat speed through the water is less than the river current, you are going backwards relative to the bank.
You might have beautifully trimmed sails… perfect telltales… textbook technique…
…and still be drifting past the clubhouse in reverse.
⛵ Yes… Skilled Sailors Can Still Move the Boat
This is where experience comes in.
Very skilled sailors can:
- Use every whisper of wind
- Keep the boat perfectly balanced
- Sail ultra-efficient angles (often not directly upstream)
- Exploit tiny gusts and shifts
- Even use subtle techniques like body movement to maintain flow over sails
You’ll see them creeping forward when everyone else is parked.
It’s quite something to watch.
🤔 But… Is It Really Sailing?
Here’s the slightly controversial bit.
If:
- The sails are barely filled
- Progress comes in short bursts
- And the river current is doing most of the “movement”
…then are you really sailing?
Or are you:
- Drifting with style?
- Waiting for wind with ambition?
- Or quietly wishing for a tow from the safety boat?
⚖️ The Honest Answer
✔ Yes — it is sailing
…but it’s a very different kind of sailing.
It becomes:
- A test of patience
- A lesson in boat balance and efficiency
- A masterclass in reading micro-weather
And, if we’re honest…
❌ Not always the most exciting afternoon on the water.
😄 The PMR Sailing Reality
On days like this, I’ve discovered three types of sailor:
- The Optimist – “There’s a breeze coming… any minute now…”
- The Technician – adjusting sails for the 47th time
- The Realist – already back at the clubhouse, sitting at the bar.
I’ll let you guess which one I’m becoming…
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