In Hullspeed there are two ways to specify the input data that is used in the resistance algorithms:

§   Manually specify the input data*

§   Read the input data from a Maxsurf design and automatically measure the surface shape

A combination of the two is also possible: read in and measure a Maxsurf design file and manually override the measured data. In any case, it is always advisable to check the automatic measurements of half angle of entrance, deadrise, chine type etc. as these can be difficult for Hullspeed to determine automatically.

* = For the slender body method a mesh on the Maxsurf surface will be calculated which is then used to calculate the resistance. This means that, except for the wetted surface area, it is not possible to enter or edit the input data manually.