Self-Deception Passage
The Princess Bay excursion boat approaching us for the transfer of hydraulic fluid June 12, 2015 We left our anchorage at Manzanita Bay at the late hour of 0815. We had planned on a leisurely exploration of Rudyerd Fjord with no particular destination in mind. Three full days remained to us before Mathias's flight out of Ketchikan, and we would not have to push very hard to get there. The barometer was at its highest point of the trip, and broken cloud coverage promised a partly sunny day for our tour of Rudyerd Fjord. It became immediately evident that the thrust available from the engine and drivetrain were less than half of normal. Full throttle resulted in between 2 and 2.5 knots. Alarming. But the engine was running smoothly throughout its operating range. No parasitic oscillation, no strange sounds. If anything, it was smoother than normal. Puzzling. You can't hit a log or a rock with a propeller turning at 2500 RPM and not know it, right? We hadn't. No s...