Page 315 - statbility for masters and mates

The Deadweight Scale 303
The following worked example shows the use of the Dwt Scale:
Question:
Determine the TPC at the fully loaded draft from the Dwt Scale shown in
Figure 35.1 (on page 304) and show the ®nal displacement in tonnes remains similar for fresh and salt water.
From Figure 35.1 TPC is 31.44 and the permitted fresh water sinkage as shown on the freeboard marks is 19cm with displacement in salt water being almost 23 900 t.
Consequently, the approximate load displacement in fresh water is given by:
FW sinkage W/TPC 40 cm
W TPC FW sinkage 40 31:44 19 40 23 894 tonnes
Hence this vessel has loaded up an extra 19 cm of draft in fresh water whilst keeping her displacement at 23894t (equivalent to salt water draft of 9.17 m).
So