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Rowboats and Rafts
Rowboats are either steel or wooden hulled watercraft. A raft is a flat structure for transportation over water and is supported by buoyant materials such as barrels or rubber tubing. Both are propelled by oars or paddles.
322 Questions
What is scientific about white water rafting?
In order to successfully navigate whitewater one must have a general understanding of physics and fluid dynamics. You must be able to predict how certain currents and river features will affect the vessel, whether it be inflatable raft or kayak. Professional whitewater guides refer to this as "reading water".
Apart from the above, science, engineering specifically, has made navigation of more difficult whitewater possible due to more advanced boat designs. The advent of the inflatable floor in whitewater rafts moved the sport forward by allowing the vessel to "self-bail". This made running bigger more sustained rivers safer and easier. Kayaks are constantly evolving in design with boats becoming more specialized over the years. Whitewater kayaks are now divided into 4 categories: Runners,play boats,creek boats and cross boats. Runners are used for top to bottom class IV and below rivers. Play boats are designed for free-style kayaking. Creek boats are engineered for the most extreme conditions which include very steep gradient rivers and creeks with serious consequences. Cross boats take some of the best features of runners and free-style kayaks and blend them into one unique design allowing for "free-running". Science has made the modern sport of running whitewater river possible, and it will continue to dictate the limits of the sport far into the future. So get out there and get wet!
Which wood is used to make catamaran?
Historically, the best wood for ANY boat was: Whatever was most available. Various types of plywood coated with fiberglass is an excellent choice.
Is the 1990 Johnson model J3BRESR a 2 or 4 stroke?
The 1990 Johnson model J3BRESR is a 2-stroke outboard motor. Johnson's J-series models from that era are known for their 2-stroke design, which provides a lightweight and powerful option for small boats. This model, like others in its series, utilizes a simple and efficient 2-stroke engine configuration.
How do you make a raft out of twigs?
To make a raft out of twigs, first gather a sufficient number of sturdy, straight twigs of similar length. Lay them side by side to form the base of the raft, then use thinner twigs or natural cordage to tightly bind them together at regular intervals. For added stability, create a cross-brace structure by layering more twigs on top and securing them in place. Finally, ensure the raft is buoyant by testing it in water before use.
|x-42|<6
42 is the middle of 36 and 48
6 is what you add to 32 or subtract from 48 to get the middle answer
Depends on the type of boat. A 17-Montauk weights about 1800lbs, while a 20-Revenge weighs about 3500lbs.
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What is the name of the bottom of the boat?
It's called the bottom. The keel is a structural member that runs fore and aft and supports the frames (ribs) to which the bottom and side plating are fastened. Inside the boat it is also called the bilges.
How do life jackets and inflatable rafts keep you afloat?
They are filled with air, which is less dense than water, therefore keeping you afloat.
Why does Huck say there is no home like a raft?
Huck has a transcendental idea of loving nature and only wants to be on the river with Jim
What does the raft in The Cay look like?
I think the raft of the cay is like an ordinary one or a boat.
Who manufactured a Jon boat with model number 12SV?
12SV is the model number of a semi vee 12 ft fishing boat by Delhi boat co as Delcraft. Later boufgt by Starcraft.
What do you need to survive on a raft?
Well I think that you might need the following things: - Paddle: you will need this to paddle across a place, or you wil float to nowhere - Food - you might not be able to catch fish or cook on your raft. It is a good idea to bring packaged food. - First aid kit - in case of any accidents, you would be able to keep yourself from bleeding. Also you should have a flashlight inside so that you can be able to see your envornment during the night. These are just a few things you will need, but there might be more. It is best to ask your teacher about this, but I hope this helps some! Calv860 =]
Where is the MFG of Polar Kraft boats?
Polar Kraft boats are manufacutred in Syracuse, Indiana. They're a great aluminum fishing boat (apparently Babe Winkleman switched to Polar Kraft boats this season).
15 MPH. On the way up the river subtracts from the speed of the boat so the time is 40/10 or 4 hours. On the way back the river adds to the speed of the boat so the time is 40/20 or 2 hours. The total time is 6 hours.
What materials are life rafts made of?
I was surprised to see that nobody had posted an answer for this question, and even though I found it looking for the answer myself, I still do know that inflatable rafts such as the ones used for white water rafting, life boats, police boats, etc. are made of a special kind of rumber that is thick, durable, and flexable enough for its many boat related jobs. However, that is all I know, as I mentioned earlier(I just though that this info would be better than nothing). So if you can get more spacific than that, please enter your own answer on to this site and help fill in the gaps that I just don't know how to give answers for. P.S. To whoever finds the answers, CONGRATZ , you helped finish somthing I tried to do and couldn't at the time. GOOD LUCK
