Archive for the ‘dinghy’ tag
Dinghy Raft
Dinghy Raft
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Ocean Pioneers List Price: $29.00 Sale Price: $19.00  |
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Tales of yachtsmen sailing the oceans tend to fascinate. They particularly stir the imagination when they are about adventurers doing something that has never been done before. About men making long and dangerous voyages in tiny boats with hardly a navigation aid at their disposal... |
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Seamax Ocean320 Red -10.5 Feet Aluminum Floor V Hull - Inflatable Boat Dinghy List Price: $1,799.00 Sale Price: $1,049.00 |
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* Length: 10.5 feet / Beam: 5.0 feet / Tube diameter: 16.5 inches * 3 buoyancy tube chambers + Keel chamber / Aluminum floor set / Transom with engine brackets * Bow bag and bag handles / Color coordinated, durable rubbing strake (tube and keel) * 1 skid resistant plywood bench seat / 2 sets life lines, wave prevention design * Keel double layer patch / seams double PVC layer / 45 degree cones with hard end * Stainless steel towing rings and front handle / carrying handles and inner handles / One-way drain valve ... |
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Seamax Ocean380 - 12.5 Feet Aluminum Floor V Hull - PVC Inflatable Dinghy List Price: $2,299.00 Sale Price: $1,399.00 |
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* Length: 12.5 feet / Beam: 5.5 feet / Tube diameter: 17.3 inches * 3 buoyancy tube chambers + Keel chamber / Aluminum floor set / Transom with engine brackets * Bow bag and bag handles / Color coordinated, durable rubbing strake (tube and keel) * 2 skid resistant plywood bench seats / 2 sets life lines, wave prevention design * Keel double layer patch / Tube and seams double PVC layer / 45 degree cones with hard end * Stainless steel towing rings and front handle / carrying handles and inner handles / One-way drain valve ... |
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Seamax OCEAN380 - 12.5 Feet Aluminum Floor V Hull - PVC Fabric Inflatable Boat List Price: $2,299.00 Sale Price: $1,399.00 |
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* Length: 12.5 feet / Beam: 5.5 feet / Tube diameter: 17.3 inches * 3 buoyancy tube chambers + Keel chamber / Aluminum floor set / Transom with engine brackets * Bow bag and bag handles / Color coordinated, durable rubbing strake (tube and keel) * 2 skid resistant plywood bench seats / 2 sets life lines, wave prevention design * Keel double layer patch / Tube and seams double PVC layer / 45 degree cones with hard end * Stainless steel towing rings and front handle / carrying handles and inner handles / One-way drain valve ... |
can som1 please help me with this maths equation?
A dinghy has sunk and the survivors are on a life raft. Their distance (in km) from a river estuary is changing as the tide goes out and comes in again. It can be moddelded by the equation d = -x^2 + 3x + 4
where x represents the number of hours since the dinghy sank.
a) how far was the dinghy from the estuary when it sank?
b) Explain what happens to the life raft in the first hour?
c) solve the equations
d) Explain what the positive soloution for this equation represents in this situation
Note: please show working out
d(x) = -x^2 + 3x + 4
a. the answer is simply d(0).
b. sketch the graph... does it curve up then down? then it goes far from the bank then gets near.
c. 0 = x^2 - 3x - 4 {equate to zero, you can also change signs.}
(x-4)(x+1) = 0
thus x = 4 or -1
thus x = 4 hrs
d. the life raft goes to the bank naturally after 4 hrs
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About the Author
Nash Sterling has over 16 years experience in the inflatable boats industry. He has seen inflatable boats gain in popularity as technological innovation makes them an ever more attractive option. He likes to stress the importance of identifying the right inflatable boat for your need to get the maximum value for your money. You can learn more at www.inflatableboat.net.
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