On Saturday, although we wanted to dinghy into Oxford again, it was still too breezy and choppy. We stayed onboard, read and rested, tended to small chores and checked over the boat. And we were disturbed by what we found. Once again, a voltage check showed that the batteries were not fully charged despite running the generator for 13 hours overnight. Worse yet, the foods and ice in the freezer compartment of our refrigerator showed signs that they were starting to thaw. Summer School was equipped with a typical marine refrigerator/freezer, a half size unit fitted into a compartment under the counter of the galley. This unit ran on 120 volt ac power if available from a dockside connection or our onboard generator. If these sources were not available, such as on Saturday morning after we shut down the generator, then the refrigerator automatically switched to 12 volt dc power from our house battery system. I reasoned that, if the battery voltage was low due to a lack of an adequate charge (for whatever reason), then the refrigerator may not be able to cool adequately, especially in the hot weather we were experiencing after the passage of Fran. We therefore decided to run the generator for an extended period and turned it on at 2 p.m., not to be turned off again until 8 a.m. Sunday morning. When we checked the refrigerator at that time our situation was much worse. All the foods in the freezer were thawed.
It was imperative that we solve this problem if we were to continue our cruise, and our lives, as planned. Was our refrigerator simply failing, requiring us to replace it at substantial cost, perhaps several thousands? If this were the case we would have to spend significant time living in a marina somewhere while we got the unit replaced, which would completely disrupt our plans and our lives. This would be much worse than the problems we had with our air-conditioner.
Once again I studied the manual for the refrigerator that came with the boat, looking for any hint or clue, and once again I read the specification that, if the refrigerator was mounted in an enclosed space, then that space should be vented with a minimum aperture of 35 square inches. I knew from looking at the vent cover on the outside of the cabin that the vent size was much smaller than this; the vent cover was only about two inches by four. In fact, for this reason I had long ago purchased a 5 by 9 louvered stainless steel vent cover with the intention of someday enlarging the vent to improve the performance of the refrigerator. But to this date our refrigerator had never failed us. On the other hand, we had not anchored for extended periods in weather as hot as what we experienced after Fran.
There was one way to find out if the lack of adequate venting was the source of our difficulties, and that was to remove the refrigerator from its compartment and see if its performance improved. Although I hated to disrupt the interior of our cabin, I removed the mounting screws and was able to slide the refrigerator out of its compartment and onto the cabin sole without having to disconnect it. I was shocked by what I found. The compartment was not vented at all! The small vent that I could see on the outside of the cabin had been misplaced. That vent hole, which assuredly was meant for the refrigerator, opened underneath the galley sink instead! The wonder was that the refrigerator had been able to operate at all.
Looking back on our actions on that Sunday morning I wonder at our boldness, but there seemed very little choice at the time. We had to get this problem resolved, and do it ourselves if at all possible. So I restarted the generator at 9 a.m. to provide power for my drill and saw, ran an extension cord onto the outside deck, and, after measuring very carefully, cut a large rectangular hole in the side of the boat. By noon the 5 by 9 vent cover had been mounted and sealed, and the refrigerator replaced in its compartment.
We turned off the generator and waited. This would be a difficult test since the refrigerator was now running off the batteries and the outside temperature was again in excess of 90 degrees. We were encouraged by the fact that by evening the ice cube trays had started to freeze again though the meats in the freezer compartment were still soft.
The NOAA weather forecast that night was the best we had heard for almost a week, with predicted hot temperatures but light winds and calm sees on the Chesapeake. If we were going to proceed with our plans to ascend the Potomac and visit Washington this might be the best time to cross the bay. We decided to leave the next morning if the forecast held, cross the bay and anchor somewhere in the Solomons area near the mouth of the Patuxent River.
We were awake early on Monday morning. The NOAA weather broadcast was still the same, calm waters and light winds, so we got underway as quickly as possible. We left the protected anchorage at Trippe Creek by 8 a.m. to cruise the 45 miles across the bay and southward to the mouth of the Patuxent River. We reasoned that we would anchor overnight there and, if the refrigerator was working well and the boat was otherwise functioning properly, we would leave the next day to head south to the mouth of the Potomac and thence upriver toward Washington. On the other had if the refrigerator was still malfunctioning, or if there were any other significant problems, we would be close to Solomons, which had many marinas and repair facilities.
On that Monday we were treated to an unusual experience on the Chesapeake. During the entire day the water, even out in the main shipping channel in the middle of the bay, was perfectly calm and flat. It was truly like glass with perfect reflections of the sky. Any disturbance, such as a ripple or a boat wake, could be seen from far away. We saw a number of areas where there were what we call fish boils - areas in the water where the surface was roiled by numerous fish feeding and trying to escape predators. We stopped briefly to fish one of these and easily caught five striped bass and a nice sized blue fish. By 3 p.m. we had entered the mouth of the Patuxent, continued past Sandy Point and the entrance to Solomons harbor, and rounded Point Patience off which the water was, incredibly, more than a hundred feet deep in the middle of the river. We tucked into Mill Creek on the western side of the river (not to be confused with the Mill Creek that flows into the harbor at Solomons) and dropped our anchor in a protected cove under the supervision of two beautiful swans. We were home for another night.
After settling into our anchorage a check of the refrigerator showed that everything in the freezer was hard frozen; the cutting of the vent hole in the side of the cabin had worked and the refrigerator was probably working better than it ever had.
Although we still had the problem of the batteries not charging fully when the charger was running off the generator, we thought we could live with this for awhile, at least until we got to a marina in Washington. So we settled in to a hot night on Mill Creek and made our plans to start for Washington and the Potomac early the next morning. Once again, however, Hurricane Fran forced us to change our plans. We learned, when we watched late night news from a Washington channel, that the Potomac was experiencing its worst flood in a hundred years due to all the rain dropped by Fran in the Potomac watershed. Whole trees and parts of buildings were being carried down the river by a current that was described as savage. There was no way we could fight against that current for a hundred miles and cope with all the debris in the water. A cruise up the Potomac and a visit to Washington would have to wait for another time. Of course we had no way of knowing that this anticipated cruise up the Potomac, when it came, would be part of the last cruise we would ever make in Summer School.