Boat speed is traditionally defined as how fast your boat is moving with respect to the water. This is an important definition as I've seen boats running at top speed but unfortunately for them they were caught in a strong current so the boat was not moving at all, or moving backward, with respect to the ground. (That is called Speed Over Ground.)
Speed with respect to the water is measured by dipping something in the water, like a log or a paddle-wheel, and measuring how fast the water is moving by. For example if you have a boat that is 10 long (feet, meters, I don't care), and you throw something in the water at the front of the boat and notice it takes 1 second to get to the back of the boat, then your speed is 10/second. A paddle wheel you would see how fast it turns and compare it to other known speeds. The advantage of this technique is it gives you continuous readings. Boat speed instruments are based on this technique and involve a miniature paddle installed on the outside of the hull.
Or you can use devices that track location, like a sextant or GPS, and see how far you have traveled over the last hour and that is your speed per hour.
sailor: boat and human
The word is spelled sailor. Example: The sailor loved relaxing on his boat.
A "sailor".
A scull boat; one oar to the stern.
a wooden boat
Boats/ships don't measure speed in mph.
The sailor set out to explore the deep blue ocean in his boat.
Let speed of stream = y kmph & speed of boat = x kmphspeed downstram((x + y)kmph) = 8 * 60 / 40 kmph= 12 kmphspeed upstream((x - y) kmph) = 8/1 kmph= 8 kmphx + y = 12x - y = 8--------------2x = 20,2y = 4x = 10,y = 2=>Speed of stream = 2 kmph, Speed of boat = 10 kmp
Sailor or fisherman
The nautical term for a unit of speed when sailing or navigating a boat is the word knots. To measure a knot it is the unit of speed equal to one nautical mile approximately 1.151 mph.
because the name speed boat means its a fast boat why else would it be called a speed boat
The sailor almost lost his grip on the nets as furious waves rocked the boat.