Watt & Sea Hydro Generator Review

‘Wattsson', a Watt & Sea 600 watt hydro generator, has become part of the Isbjorn (our Swan 48) family. He joins ‘R2-D2’, our autopilot, as simultaneously our most and least favourite pieces of gear on the boat.

We sail Isbjorn 10,000 miles a year, and Wattsson happily hums along, day and night, providing all of our electrical needs at sea and then some. However, it's taken a full year and nearly $10,000 to finally work out the kinks, but I still think he is worth it...to us. Here's why, and why he might not be worth it to you.

  1. Why Most New-To-Us Boat Electrical Systems Must Be Rebuilt
  2. One Simple Law That Makes Electrical Systems Easy to Understand
  3. How Batteries Charge (Multiple Charging Sources Too)
  4. 5 Safety Tips For Working on Boat DC Electrical Systems
  5. 7 Checks To Stop Our DC Electrical System From Burning Our Boat
  6. Cruising Boat Electrical System Design, Part 1—Loads and Conservation
  7. Cruising Boat Electrical System Design, Part 2—Thinking About Systems
  8. Cruising Boat Electrical System Design, Part 3—Specifying Optimal Battery Bank Size
  9. The Danger of Voltage Drops From High Current (Amp) Loads
  10. Should Your Boat’s DC Electrical System Be 12 or 24 Volt?—Part 1
  11. Should Your Boat’s DC Electrical System Be 12 or 24 Volt?—Part 2
  12. Battery Bank Separation and Cross-Charging Best Practices
  13. Choosing & Installing Battery Switches
  14. Cross-Bank Battery Charging—Splitters and Relays
  15. Cross-Bank Battery Charging—DC/DC Chargers
  16. 10 Tips To Install An Alternator
  17. Stupid Alternator Regulators Get Smarter…Finally
  18. WakeSpeed WS500—Best Alternator Regulator for Lead Acid¹ and Lithium Batteries
  19. Smart Chargers Are Not That Smart
  20. Do You Need A Generator?
  21. Efficient Generator-Based Electrical Systems For Yachts
  22. Battery Bank Size and Generator Run Time, A Case Study
  23. Battery Options, Part 1—Lithium
  24. Battery Options, Part 2—Lead Acid
  25. Why Lithium Battery Load Dumps Matter
  26. 8 Tips To Prevent Lithium Battery Load Dumps
  27. Building a Seamanlike Lithium Battery System
  28. Lithium Ion Batteries Explained
  29. 11 Steps To Better Lead Acid Battery Life
  30. How Hard Can We Charge Our Lead-Acid Batteries?
  31. How Lead Acid Batteries Get Wrecked and What To Do About It
  32. Equalizing Batteries, The Reality
  33. Renewable Power
  34. Wind Generators
  35. Solar Power
  36. Hydro Power
  37. Watt & Sea Hydro Generator Review
  38. Battery Monitors, Part 1—Which Type Is Right For You?
  39. Battery Monitors, Part 2—Recommended Unit
  40. Battery Monitors, Part 3—Calibration and Use
  41. Battery Containment—Part 1
  42. Q&A—Are Battery Desulphators a Good Idea?

Andy Schell is the co-founder of 59º North Sailing, which takes paying crew on offshore sailing passages around the Atlantic, Arctic, Caribbean and beyond. They are currently refitting the Farr 65 FALKEN as their new flagship, while they operate their Swan 59 ICEBEAR and Swan 48 ISBJORN in the meantime. Andy founded and hosts the ON THE WIND sailing podcast and recently launched the online seamanship platform The QUARTERDECK. Andy has sailed over 100,000 miles offshore, including 5 Atlantic crossings and an expedition to 80º North in Svalbard in 2018. Check them out at 59-north.com.

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