Machines · Ages 7+ · 20 min · Kholo Plus
Cruise ship
Why steel floats — and the secret crew corridor inside.
What is inside
- Hull & structure. A giant hollow steel shell that pushes water aside — and so it floats.
- Guest areas. Cabins, restaurants, a theatre, pools and a spa for up to 6,000 guests.
- Bridge & navigation. The captain’s command room, high up at the front, with radar and satellite navigation.
- Crew areas. Hidden spaces where about 2,000 crew work and live: kitchens, stores, laundry and cabins.
- Engines & propulsion. Huge engines make electricity; electric motors in swivelling pods turn the propellers.
- Water, air & waste. Machines that turn sea water into drinking water, cool the air, and clean the waste.
- Safety. Lifeboats, life rafts and many other systems that keep everyone safe.
Stories in this thing
- How does a giant ship float?. Steel that floats — the secret of pushing water
- Engines & steering. A floating power station
- A guest’s day. From cabin to pool to theatre
- Behind the scenes. Where 2,000 crew work
- Staying safe at sea. Sealed rooms, lifeboats and fins
- Water, air & waste. A town that cleans up after itself
School topics it covers
- Floating and sinking
How children use it
Pull it apart with one slider, tap any part to hear what it does, follow a short story read aloud, then answer a few questions. Every thing comes with experiments to try at home and study notes linked to the NCERT chapter it supports.
More things to open
- Family car — Follow one drop of petrol from the tank all the way to the wheels.
- Aeroplane — How 70 tonnes of metal takes off, cruises and lands.
- Electricity — From the power station to your switch — and what happens when you flick it.
- Smartphone — Pull it apart into seven layers — the screen, the chip, the battery and the radios that carry your voice.
- Humanoid robot — Motor muscles, camera eyes and a computer brain.
- Mango tree — Roots, pipes and leaves that cook food from sunlight.