Safe Loading — Subpart C

Calculation of the Maximum Displacement

Blank Form for the Calculation of Maximum Displacement

Enter on the form below, the dimensions noted in Figure 4 for the vertical dimensions a, b, c, d, e and f, on each of the sections (stations), enter the calculation beam for each section, and enter the calculation length (L).

NOTES:

1. Volume in cubic inches of the integral structure aft of the transom and below the static float-plane may be added to the cubic capacity. To determine this, figure the volume of any bustles, integral swim platforms or other structures below float-plane and add this volume to the formula where it says +/- Note 1. On the other hand, any volume of an engine well below the float-plane must be calculated and subtracted from the cubic capacity.
2. The factor 174,600 includes a 5% margin for measurement error.
3. Boat weight includes engine, stern drive, fuel system, fuel and battery weight.
4. The figures used in these examples are taken from the boat dimension drawings in Figure 4. The letters (a, b, c, d, e, and f) have been placed under the dimensions taken from Figure 3 as a further help for the user of this Guideline. All dimensions should be converted to decimal numbers before insertion in the formula. That number in cubic inches divided by 1,728 gives the volume in cubic feet.

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