USCG-1481-SA-4
STEPS
SOLUTION:
Draft Marks on Bow and Stern of Vessel
Draft Numbers Showing Foot Draft Mark
Various Draft Readings
FWD
8'- 06"
Select the closest answer.
AFT
8'- 06"
MEAN
8'- 06"
A)
7'- 09"
B)
8'- 00"
C)
8'- 03"
D)
8'- 06"
ANSWER
You are reading the draft marks in illustration D032DG. The water level is at the top of
number 8. What is the draft?
Red = table values, etc.
Green = ANSWER
Blue = information provided.
Black = calculated values.
LEGEND:
Principles of Stability
Stability and Trim Calculations - Change in Draft
PROCEDURE FOR READING DRAFT MARKS
Draft marks are numbers marked on each side of the
bow and stern of a vessel. Draft marks show the
distance from the bottom of the keel to the waterline
at that point.
The draft numbers shown in the figure below are 6
inches high and 6 inches apart. The bottom of each
number shows the foot draft mark. The foot of each
mark is a visible depth measurement.
Four different draft readings are depicted in
this diagram.
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