How To Avoid Capsizing - 06/15/2011
In 2009 40% of all recreational boating deaths in the U.S. were the result of boats flooding, swamping or capsizing – that represents 298 people out of a total of 736 boating fatalities -- according to USCG statistics. Most of those accidents occurred in open fishing boats under 26’ (7.9 m). Virtually all of these accidents were the result of operator error, generally attributable to lack of experience and boating education. If you are in a boat that swamps or capsizes, statistics say you have a 37% chance of ending up a fatality. For that reason, you see how lucky the folks were in the six capsizing incidents in the companion story in this issue.
To zero-in on the boaters most likely to be at risk of swamping and capsizing lets look at three broad, defining criteria—
Boat Size: 85% of all boating fatalities occurred in boat under 26’ in length.
Boat Type: 60% of all recreation boating casualties involved people in open motorboats (54%) or in rowboats (6%).
Boating Activity: While the USCG statistical report does not break out boating fatalities by primary activity (except for skiing), it is clear from looking over the reports that over 90% of all of the open motorboats and rowboat fatalities involved boats used for fishing, as opposed to sportboats, skiboats or other types of open motorboats primarily used for other purposes.
Causes of Swamping
Boats become swamped when excessive water enters them either through holes in the bottom or from over the gunwales. Swamping usually very quickly leads to a boat capsizing due to the free surface effect of water in the hull. Following are leading causes of swamping—
2. Improper load distribution
3. Freeboard inadequate for sea conditions
4. Towing improperly
5. Other manifestations of operator error
6. Failure of thru-hull system integrity
All except item #6 involve the lack of experience, education and/or common sense of the operator. And even item #6 usually involves operator error in as much has proper maintenance was often not carried out, nor were precautions taken to avoid catastrophic malfunction in some cases.
The Operator is Responsible
All boats are designed to operate safely in a certain range of sea conditions. Generally, small boats with low freeboards are intended for operation in small lakes, rivers, and other protected bodies of water. Boats with low freeboards are not intended to be taken into large bodies of water, except in calm conditions. It is up to the operator to make a judgment as to what conditions his boat is able to handle.
Sea conditions, even in small lakes, can be too much for a boat in severe weather conditions. Flooding rivers are often too powerful for any motorboat no matter how large or powerful. In all cases, the operator must decide when to venture out in his vessel. It is solely his responsibility as to when to go boating, not that of the USCG or the boat builder.
Some Typical Operator Mistakes
In addition to the obvious mistakes of overloading, improper weight distribution, and using a boat in conditions beyond its capabilities, there are several other common mistakes inexperienced boaters make. Here are a few examples—
a. Quick deceleration with the result that the stern wave overtakes the vessels and floods in over the transom.
b. Stuffing the bow into a sea due to excessive speed.
c. Anchoring by the stern.
d. Anchoring too close to the surf or inlets.
e. Making sharp turns at high speed and shipping water as a result.
f. Careless running of inlets.
g. Not observing a change in sea conditions.
h. Forgetting to insert drain plug before launching.
i. Improperly towing another vessel.
j. Trying to raise a fouled anchor with the power of the engine.
k. Not avoiding breaking seas.
l. Speeding in unknown or in shallow waters – nothing will capsize a boat faster than hitting a fixed object under the water at high speed.
Only Power Boats 20’ and Smaller Are Required to Float Level
In 1978 – 33 years ago -- the USCG required that all powerboats 20’ and smaller with an engine of 2-hp or more must “float level” when swamped. In order to do that with modern boats with large outboard engines it takes a fair degree of sophisticated engineering as to the amount and location of flotation foam.
A BoatTEST.com Caveat
We use the word “required” in the above paragraph because we have read too many reports of people swimming away from boats under 20’ that have reportedly "sunk" to wonder if all boats 20' and under actually meet this requirement. We have also seen pictures of boats in the required class of level flotation that have only their bows showing above the water -- i.e. not floating level.
The USCG and NMMA Certification relies on boat builders to meet the regulations for every unit they manufacture. Each unit sold is not tested for level flotation. Consumers of boats 20’ and under should satisfy themselves as to the integrity of the brand they buy.
Unsinkable Does Not Mean “Level Flotation”
Many builders of open fishing boats over 20’ state that their boats are “unsinkable,” and as far as we know that is usually true. But many boat owners have confused the word “unsinkable” with the mental image of a boat swamped but “floating level.” We only know of three brands that make a claim of “floating level” for boats over 20.'
For the bulk of the open boats over 20’ that claim to be unsinkable, we suggest that you assume that means that these boats will have their bow, and little else, above water if swamped and capsized, and prepare for that possibility.
Quick Dewatering is Imperative
Once any open boat becomes swamped, no matter what its builder claims, it will in most cases capsize quickly even if it has level flotation. That is why once a boat ships some water over the stern, the bow, or abeam, the skipper must take immediate action to avoid taking on anymore water which may flood and swamp the boat. Water that is in the boat must be evacuated as quickly as possible. Do not rely on bilge pumps for this job because their capacity is so low as to be worthless in situations like this.
Consider running the boat slowly ahead to move the water out the scuppers or over a cut-away transom. Man your 5-gallon bucket or anything else you might have at hand. Part of the minimum equipment requirements that you need to have on your boat is a manual bilge pump. Now is the time to put it to use. Do not stop until you have most, if not all, of the water out.
Once water is in the boat, keeping from shipping more water must become the prime consideration for every skipper, and that may mean pointing the boat in the opposite direction of where he wants to go. It may mean that he should head into the seas, or take them at a slight angle to be able to ride up and over and not crash down and bury his bow. It may mean he should seek the lee of an island or obstruction.
When approaching an inlet that is running high or the tide is against the wind, it may be advisable to stay offshore and wait for the weather to pass or the tide to change, or even seek another harbor.
And finding oneself in such a situation certainly means that he should alert nearby boats should be alerted and the USCG contacted and asked to standby.
1. The operator is responsible for the safety of his vessel and its occupants. You are the captain of your boat, and your guests lives are in your hands. Do not take this responsibility lightly.
2. Everyone aboard, not just the kids, should be wearing a PFD. There are several choices beyond the orange life vests that you probably got for free with your boat. Explore them.
3. Match the boat’s capabilities to the conditions. If in doubt, stay inshore. It's better to be at the dock wishing you were offshore than offshore wishing you were at the dock.
4. Be alert to changes in weather. Storms usually have plenty of warning before they strike. Even the cheapest VHF has a weather button.
5. Be sure to have all USCG-required equipment aboard such as flares and signaling devices.
6. All operators should have a VHF radio handy, not just a cell-phone. While you can write down the Coast Guard's number, will you know the number of the boat only 1/2 a mile away?
7. File a float plan with a trustworthy friend.
8. Remember that the best time to head back to shore is when you first think about it.
9. Education is the key. If you choose not to take a class, then we recommend the BoatTEST.com Smart Boating DVD Box set. You can learn at home and it makes a great refresher year after year.
Finally, the boaters most at risk are not the ones reading this report – but upon those that are reading it (YOU) rests the responsibility to help a boater in need. Please note in the accompanying article how many boaters were saved because alert Good Samaritan fellow boaters came quickly to their rescue and called for help.
When the going gets rough, keep an eye out for your fellow boaters on the water.