According to U.S. regulations, when estimating the cost of collision damage to a tank vessel after a marine accident, which of the following should NOT be included in the repair cost estimate?

Correct Answer: Option D — All of the above

46 CFR 4.05-1 defines the reporting threshold for marine casualties. When calculating the cost of damage, indirect costs such as drydocking, cargo off-loading, and gas-freeing are excluded. Only the direct costs of repairing the physical damage to the vessel are considered when determining if the reporting threshold is met.