If the final desired speed after acceleration is less than the maximum speed, then much less time and distance are needed. Then the maximum available thrust of curve 1 is utilized until the desired speed is reached and the thrust is appropriately reduced to equal the resistance at the desired speed, curve 2. This technique is useful in conducting maneuvering trials to shorten the time needed to ”steady up” on the approach course.
Figure 4.33-b shows the relationship defined by equation 4.45 between u_ and the ship speed, U, corresponding to the thrust curves 1 and 2. The relationship between time, velocity and distance is as follows: