Not sure if the following is real or not, but you might be able to join the voyage by figuring out:

Syracucia is 50 times as large as an ancient warship. If an ancient warship is typically 20 meters long, 10 meters wide, and 10 meters tall. Can you estimate the length, width and height of Syracucia? You may have as many answers as you like.

A stone missile weighs 180 pounds. It takes 2 soldiers 10 minutes to load it onto the catapult. How long does it take 4 soldiers to load 8 catapults?

The bathhouse on Syracucia has two tubs filled with heated water. If one tub can be filled in 6 hours, and the other can be filled in 8 hours, how long does it take to fill both? (There are multiple correct answers)

There are 1000 people on Syracucia. It also carries 400 tons of grains and 74 tons of drinking water. If one person eats 500 grams of grains per day, how long will 400 tons of grains last? If one voyage takes 6 months, how much water can a person drink each day?