2-10. UNDER TOW.
While under tow, it is the responsibility of the tug boat captain to see that all lines are secure, that proper navigation
signals are displayed, and that no hazardous conditions are allowed to develop.
2-11. PREPARATION TO UNLOAD.
A loading or unloading operation is a fire hazard. No smoking, open flame, open lights, or any repair
work requiring the use of tools that could ignite the flammable cargo shall be permitted on the vessel or in
the area adjacent to the vessel during cargo transfer operations.
a. Moor vessel to berth and provide safe passage to shore. Move tug away.
b. Record forward and aft draft readings.
Thieving is the procedure for determining the presence and quantity of water at the bottom of a tank
containing a petroleum product. A water indicating paste is applied to a sounding bob. The bob is lowered
to the bottom of the tank and then withdrawn. Water is indicated by the color change of the paste on the
c. Sound and thieve cargo tanks and record readings in the presence of the terminal representative.
d. Connect ground cable from vessel to shore ground.
e. Connect cargo hose to the aft manifold only. Place drip pan under connection.
f. Support the hose with the cargo boom to allow for movement and change of draft of vessel.
g. Inspect all blanked connections for tightness.
h. Close all hatches. Place pins in ullage holes, close ullage caps but do not dog down.
i. Display warning at gangway or point of approach.
j. Display a red flag during daylight and a red lantern at night in a prominent position as a warning to other vessels.
Cargo pump should always be disengaged when not in use.