🔍 Key Concepts

• Damage stability and counter-flooding on column-stabilized drilling units • Relationship between location of damage (starboard/port, forward/aft) and which tank you pump from vs. to • How removing or adding weight in a specific tank affects list (sideways) and trim (fore‑and‑aft)

💭 Think About

• First, picture which way the unit will tend to heel when the starboard forward column is flooded. Will the starboard bow go up or down? • Then ask: to correct that heel/trim, do I want to lighten (pump out) or heavier (pump into) a tank, and should that tank be on the same side or opposite side, and forward or aft? • Look at the Sample Load Form diagram: which of the listed tanks (1S, 8S, 2P, C1S) is best placed to create a righting effect against a damaged starboard‑forward column?

✅ Before You Answer

• Verify on the Sample Load Form which tanks are starboard (S) and which are port (P), and their fore‑and‑aft position (forward, midship, aft). • Check whether pumping from the chosen tank will reduce weight where you already have damage, or move weight to the opposite side/aft to oppose the heel/trim. • Confirm that your choice provides a correcting moment (both sideways and fore‑and‑aft), not a worsening moment in the same direction as the damage.