SKI
TUBE PICTURES: HOW TO TOW AN INFLATABLE Action Photos Showing Techniques Used To Pull Towables
Now that you've readied your equipment and prepared your riders it's
time to tube. This page contains several pictures that
illustrate basic techniques for towing a water ski tube with
your
boat.
WARNING:
Towing people behind boats is dangerous. There is risk of
drowning, collision, propeller contact and injury from snapped rope.
It is your responsibility to be aware of such risks and
communicate them everyone aboard your boat.
This site is for general information purposes only. You
must read the specific instructions provided with your towable and
your boat. This information is provided on an as-is basis with
no warranty regarding its accuracy, use or suitability for a specific
purpose.
Note:
This page contains several high resolution, large size
photographs. These pictures were taken to be instructive and give
you the best possible feel for tubing. As such this these
pictures
may take extra time to download, especially with a dial-up internet
connection.
Picture of typical water ski tube pulling equipment in
action. Note the yellow heavy duty tow harness
immediately behind the tow boat. The harness is attached with
closed end hooks to the boat's transom D-rings (tie down U-bolts.)
The harness is 12
feet long. It easily clears the propeller area. The
harness floats because it is constructed of nylon rope and includes
a
float.
Attached to the harness is a white/blue heavy duty ski tube
tow rope. This particular tow rope is 60 feet in
length. This allows riders plenty of smooth water between
the boat's "V" wake.
Know
your tube's maximum number of riders and weight limitations.
Know the strength rating of your tow line and harness.
Do not
risk breaking and "whiplashing" your tow line by overloading it.
Multi-rider tubes require special heavy duty towing line and
a heavy duty
tow harness.
To prevent CO poisoning,
make sure your tow line is at lease 20 feet long. Carbon
Monoxide is omitted by all engines. Riders who breath in exhaust
fumes will get sick, pass out, suffer impaired judgment or become
extremely fatigued.
This photo was taken while towing a water ski tube at slow
speed. When riding slowly it's important to keep the
towable's nose up.
Your inflatable water toy should slow at the same rate rate
your boat slows. Insure that the water tube isn't "sneaking
up" on the boat when the boat slows or stops.
Make sure
everyone aboard the tube and the tow boat understands hand signals.
Hand signals are the only way you will be able to communicate.
When towing young children, drive the boat at slower
speeds and use a shorter tow rope. Children under 6 should not
ride any type of ski tube. Children older than 6 should only ride
with careful supervision.
This photograph shows a properly inflated tube being pulled across
the water. Notice how it skims on the water's
surface. This is how an inflatable
should look when being towed at fast speeds. Poorly inflated tubes sit low in the water and "plow."
This creates resistance that strains the cover fabric and deforms
the
innertube (putting the tube at risk for damage.)
As
seen here, the safest and easiest way to tow is to simply keep
the towable directly behind your boat, in the "flat" area
between your two wakes. The "flat" area is in the middle of the
wake "V" pattern.
Be aware of riders' perception of speed.
Once riders get off the boat and away from engine noise, their perception
of speed will change. Riders may want to go faster than is safe.
Under normal conditions, a safe towing speed for adults
is about 20 to 25 mph. Safe speeds for children are less
than 20 mph, depending on the age and physical capability of the
child.
Most towables
will come up on plane at 10 to 25 mph, depending on the weight
of the riders.
This pictures shows how riders can turn the tube by
shifting weight to one side. Riders should remember that towable tubes
have no brakes and no reliable steering mechanisms.
When crossing
your boat's wake, keep in mind the "multiplying effect" that
boat wakes can have one each other. A boat's wake is a sine
wave moving through the water. When combined with another
boat's wake (or naturally occurring swell or chop), the resulting
wake can be the sum of the height of both wakes. This is
the multiplying effect of naturally occurring sine waves.
For example say your boat makes a 2 foot tall wake
while on plane. Another boat traveling next to you makes a 3
foot wake. At certain points the sine waves will meet and the
resulting combined wake will be 5 feet tall! This is critical for your riders. If a rider
is used to jumping 2 foot wakes, a 5 foot wake will launch them
much
higher with much greater force. It is difficult to remain
safely
in control when this happens. At least one family has been devastated by this effect.
A boat towing children was traveling at a safe distance from
nearby docks. Then two boats wakes combined. The children
lost their grip as they were launched off the giant wake. They
flew much farther and much faster because of the unusually large wake.
They kids hit their heads on a dock (that under normal
conditions was a safe distance away.) One died and one is
permanently brain damaged.
This picture show riders being towed at fast speed. They
have moved "outside the wake" after a series of S Turns
made by the tow boat. You can see the boat's path (S-Turns) by
looking in the distance beyond the ski tube.
As
seen here, the boat captain puts riders "outside the wake" by
maneuvering the boat through a series of s-turns. The sharper
the s-turns, the greater the lateral movement of the tube.
Note that excessive speed or
sharp turns can cause the tube to flip over abruptly.
If you are towing at fast speeds, note how the towable tube
can move much faster than the boat. When moving in a straight
line, the boat and tube move at the same speed. When a ski tube
makes a sharp turn, tube speed can suddenly become twice
that of the boat. For example, a boat towing at 15 MPH can
easily have a towable moving 30 MPH from side-to-side. If
you would like to know more about towing a tube at fast speeds, click here for some excellent information,
including diagrams and a tow course.
At
fast speeds, be aware of how Centrifugal Force affects your
riders. Centrifugal Force is most apparent after a ski tube jumps
a wake and makes a sharp turn to come back over a wake.
Centrifugal Force acts on the rider during the turn, making it natural
for the
rider to fall off the tube away from the boat. This is known
as the "slingshot effect." The boat captain has the
responsibility to control boat speed, Centrifugal Force and the
"slingshot effect."
If
a rider falls off the water ski tube, pick them up
immediately. Fallen passengers are not easily seen by other
boats. The
boat captain should slow down immediately. The observer should
maintain visual contact with the fallen rider and provide directions to
the boat captain. The observer should look for hand signals from
the rider indicating that he/she is okay.
Move towards the fallen rider with the boat at slow speed.
The boat should be pointed into the wind or current, whichever
is stronger. Turn off engine and remove the ignition key when
approaching the fallen rider. If the rider is hurt but able to grab a rope, throw them
a line and gently haul them in.
If the injured person can't grab a rope, let the boat drift
towards them with the engine off. Always keep the boat
operator's side toward the victim. Retrieve the rider from the
water when your boat gets close. Put a swimmer in the water to
retrieve the rider only as a last resort (you don't want to
risk
having to retrieve two people if you don't have to.)
Remember that it's much harder to retrieve people from the
water than most people think. You may wish to practice
this technique in advance of an emergency.
TOWABLE
SKI TUBE MAINTENANCE
At the end of your day on the water, rinse down your towable
with fresh water. If it's real dirty you can clean it with soap
and water or mild detergent. Never use talcum powder or strong
solvents. Once clean and dry your ski tube can be deflated and
stored in a cool,
dry area out of direct sunlight. To deflate, simply
unscrew the entire valve from the base. Do not store a ski
tube on the beach,
dock or boat full of air! Heat will expand the air inside and
cause
over-inflation.
Avoid storing your deflated towable in places with extreme
temperatures. Protect your ski tube from insects and
rodents.
The bright colored fabric covers used on towables may bleed
and fade when they get wet for the first time. When your
tube is new, protect your boat's surfaces from possible staining.
Properly selecting and using the towable equipment helps
insure a fun day on the water. Click
here to see pictures basic water ski tube equipment and tow lines.
You've reached the last of several photo pages that illustrate
water ski tube basics. From here you may: Click here
to start with the
first ski tube photo page, Click
here to return to the ski tube tips home page.
WARNING:
Towing people behind boats is dangerous. There
is risk of drowning, collision, propeller contact and injury from
snapped rope. It is your responsibility to be aware of such risks
and communicate them everyone aboard your boat. This site is
for general information purposes only. You must read the specific
instructions provided with your towable and your boat. This
information is provided on an as-is basis with no warranty regarding
its
accuracy, use or suitability for a specific purpose.
WATER
SKI TUBE PICTURES
This site features nearly two dozen instructive
pictures of ski tube equipment and use. Click the links below
to see these original photos:
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