Questions

To determine the new draft after placing 275.8 long tons onboard the DEEP DRILLER, we need to understand the relationship between the weight added and the change in draft. This is typically found using the vessel's "TPI" (tons per inch) or "TPC" (tons per centimeter), which indicates how much the draft will change per unit of weight added.

However, since this information is not provided in the question, we can rely on one of two assumptions for vessels of similar type and size or directly compare the provided answer choices.

Here’s the method assuming we have an estimated TPI or TPC for the calculation:

1. Define your initial and new conditions.
2. Calculate the total weight increase.
3. Use the vessel’s TPI or TPC values to determine the draft change.

Let's assume a TPI value:

Since this is a very specific drill ship, assume a generic estimate of the TPI for the type of vessel might be around 50 tons per inch.

1. The initial draft is 58.0 feet.

2. 275.8 long tons are added.

3. Convert long tons to inches:

   • If the TPI is 50 (tons per inch), then: 275.8 long tons / 50 = 5.516 inches.

4. Convert inches to feet (12 inches = 1 foot):

   • 5.516 inches to feet: 5.516 / 12 ≈ 0.46 feet increase.

5. Add this draft increase to the initial draft:

   • 58.0 feet + 0.46 feet ≈ 58.46 feet.

Based on this approximation, none of your choices specifically match 58.46 feet. Looking back at the provided options:

A) 56 feet – Lower than the initial draft; not likely given added weight. B) 58 feet – Remains unchanged; unlikely given significant weight. C) 60 feet – Close to estimated draft considering approximation errors. D) 62 feet – Significant increase; unlikely based on typical TPI values.

C) 60 feet seems to be the closest realistic answer. Given the simplified assumptions, the best choice among the options provided is:

C) 60 feet