Each boat responds in a unique way and each wave presents a different challenge. Waves come in waves. On the Great Lakes, my hub of experience, they come in series of sixes or sevens. Each series is characterized by increasingly larger waves. Occasionally one is demarcated by a large wave out of proportion to the others. Waves in the Great Lakes have a short period (the time between crest) of about 6 to 8 seconds, so it can be several minutes between series. And within that cycle there are even longer cycles, which generate larger waves. These big ones sneak up on you.
The Perfect Storm made us familiar with rogue waves. Of course I am not talking about anything on that scale. The waves on our fresh water lakes are known more for their steep close packed nature than their towering size. Our waves beat you to pulp with their quick repeatability, rather than engulf you whole like those of the oceans. That said, remember the Edmund Fitzgerald and beware.
If driving into them, we pound; if traveling across, we swing like an upside-down metronome. If they are behind, well, then we slow as we get sucked back into the troughs, and speed up as we are lifted and flung forward by the front of the approaching wave. Speed can increase from 5 to 12 knots in an instant. Some following waves quietly gurgle as they pass. Others pick up the stern to a point where gravity takes over and starts the boat careening into the wave that has just passed.
It is then that the boat does something usually the purview of young bleached blond men and women on exotic islands, surf. The boat feels lively and light as it skips along on the foaming water of the breeching wave. When the speed of the wave matches that of the boat, the rudder loses it grip and the boat starts to turn right across the offending wave. This (broaching is the technical term) cannot be allowed to happen.
If sideways to a sizable wave it can overwhelm and flipped the boat over on its side or worse. I turn the wheel as far to the left as possible, far enough to feel the rudder bite into the water and the bow begins to swing to the left. Of course I do not want to go too far that way either, so a bit before the neutral point I bring the wheel back to center.
All this takes several very long seconds and thankfully large waves, in most cases, herald the beginning of a new series with smaller waves in the forefront. I take a breath and recover my heading. Once in a stable rhythm the autopilot is reengaged. I sit back to wait for the next one to appear. It may or may not, so I keep alert.
I have been at the helm of many boats from square sided tubs to sleek double enders. From heavy cruising boats to ultra light racers. All behave differently. My present boat does not sail but powers through the water pushed in front of a large four bladed propeller with over two hundred pounds of torque behind it. It seldom exhibits any strain despite the conditions it finds itself in.
She — the boat — has a fine entry that flattens out to a shallow V and ends in a broad, billboard like stern. The tons of water that make up a following wave love to push it around, but thanks to a large rudder and a long deep keel it is not often bested.
The operative word here is often. Off of Michigan’s Little Sable Point this year an odd combination of wind, waves and terrain, both above and below the water, twist us in such a fashion to dislodge furniture, nick-knacks and anything else not Velcro-ed down, including us. It occurred with such a noise that I considered, if only for a second, the sanity of being out on the water.
In another boat, like our former Swedish sailboat Lenore, the wave would have simply parted at the stern and passed by with a whoosh. Lenore loved — more than me — strong winds and big seas. She had a hidden stern as fine and pointed as her bow. A boring boat in anything less than 15 knots of wind she became more comfortable as conditions worsened. Once her sail was shortened she would steer herself, managing tacks and gybes with ease.
Lovely she was, but slow and cramped and so Carrie Rose, the 17,000 pound piece of pointed plastic, replaced her in 2003. We traded ocean-crossing ability for the RV comforts of a coastal cruiser. A good choice overall, but a choice that has me wishing for her when the waves get their dander up and start to carry us downwind on another adventure.
October 2011
