🔍 Key Concepts

• Gross tonnage vs. net tonnage – what each measurement is meant to represent on a ship • Which spaces are non‑revenue producing (do not carry cargo or passengers) and are therefore often deductible • Basic idea of tonnage deductions under U.S. and international tonnage rules

💭 Think About

• Ask yourself: Net tonnage is intended to represent the earning space of the vessel. Which of these choices clearly does NOT contribute to carrying cargo or passengers? • Consider which spaces are there purely for safety, access, or crew needs, rather than for commercial use. • Think about which items listed are actual ‘spaces’ in the sense of enclosed volume, and which might be just openings or structures.

✅ Before You Answer

• Verify which of these are enclosed spaces counted in gross tonnage in the first place, since only counted spaces can be deducted. • Check which spaces are for crew accommodation or navigation/safety needs, and how they are usually treated in tonnage rules. • Confirm which options would typically be considered working or revenue spaces versus necessary but non‑earning spaces.