Death of Empire is a secret, never-before-used airship invented by Amulya Savarkar, famed creator of the Atomics. Passepartout and Fogg encounter her in Delhi, working as a tour guide. The craft takes them to Hong Kong in 3 days - at an extremely high price!
If you kept the quartz projector of Helena Kapodistrias ; you can also offer that as a trade for passage.