Complete Guide to Open Water Sighting: Swim Straight Ahead with Fewer Head Lifts

Introduction

The Sun Moon Lake crossing is 3km, with a theoretical shortest distance of 3000m, yet many people actually swim over 3300m, wasting an extra 300m of energy. The cause is often incorrect sighting technique. This article follows the principle of minimal energy expenditure to teach you to sight on the surface like a crocodile.

1. Choosing Your Sighting Rhythm

2. The Crocodile Eye Sighting Technique

1. Don’t lift your head before the stroke; only slightly raise your chin at the end of the push phase.
2. Your eyes only need to clear the water by 1–2 cm.
3. Your body must not sink the moment you lift your head; use a kick to maintain a streamlined position.
4. Immediately after lifting your head, turn it to the breathing side to complete your breath.

3. Choosing Landmarks

• High-contrast targets: Red buoys, shore lighthouses, prominent rocks.
• Avoid low objects: Anything under 1m will disappear when the swell picks up.
• Have backups: Pick two landmarks to cross-check your direction.
• Sun position: At Sun Moon Lake, simply following the island in the middle of the lake usually works.

4. Common Mistakes

• Lifting the head too high causes the legs to sink, making subsequent strokes more laborious.
• Separating the sight from the breath means doing two head lifts instead of one.
• Lifting your head at the crest of a wave means all you see is the sky; sight in the trough instead.
• Failing to correct direction immediately after sighting, then swimming another 100m before noticing the deviation.

5. Practical Tips

1. One month before race day, practice sighting every 10 strokes within 100m in the pool to find your optimal rhythm.
2. Do at least 4 open water training sessions to simulate real wave conditions.
3. Bring two backup goggles: clear lenses and dark lenses, switching based on the day’s sunlight.
4. Use a tow float—it keeps you safe and makes you visible to coaches and boats.

6. Taiwan’s Popular Open Water Sighting in Practice

• Sun Moon Lake Crossing: Finish at Xuanguang Temple, start at Chaowu Pier, with rescue boats and buoys along the way. Recommended sighting every 8 strokes.
• Penghu Swim: Larger waves; increase sighting frequency to every 4–6 strokes.
• Taitung Living Lake: A man-made lake with no waves; you can stretch it to every 10–12 strokes.
• Kinmen Liaoluo Bay: Noticeable currents; coordinate your swim time with the tide tables.

Each race has different water conditions, so it’s recommended to scout the venue in person a week before the event. Make your sighting rhythm instinctive, and you’ll have better directional sense than 80% of triathletes.

Conclusion

Sighting is the “steering wheel” of open water swimming. If your direction is wrong, speed only takes you farther off course. Practice sighting until it’s as natural as breathing, and you’ll find that even without changing your pace, your overall time can improve by 5–10 minutes. Crossing Sun Moon Lake isn’t just about endurance—it’s about steady surface navigation.

Related Reading

• Open Water Sighting Training: Swim Fast by Never Getting Lost
• Open Water Straight-Line Navigation Sighting: Head Lift Frequency and Minimal Energy Techniques
• The Science of Open Water Sighting: Head Lift Frequency, Crocodile Eyes, and the Key to Saving 15% of Distance
• Open Water Sighting Navigation: Visual Correction and Energy-Saving Strategies for Swimming Straight