How to Build a Plus-Plus Container Ship from a Tube

By Plus-Plus USA | Plus-Plus Blocks - Empowering Open Ended | Published: 2026-10-16

Category: How-to Guides

Turn the 70-piece Container Ship Tube into a sturdy, playable ship with a step-by-step build that avoids the common weak-hull mistake.

Quick answer

Build the Container Ship Tube in three layers: a flat interlocked hull, a raised deck, then stacked containers. Keep the hull at least two pieces thick before adding height, and press every connection until it clicks. The included instructions show the intended model; the same 70 pieces also rebuild into tugboats, harbors, and cranes.

What you need before you start

The Tube - Container Ship gives you 70 pieces and a printed guide, so you do not need extra parts or tools. Work on a flat, hard surface such as a table or tray; building on carpet makes it hard to seat pieces fully and hides gaps that later cause wobble. If you have a shallow box lid, use it to sort pieces by color before you begin.

Empty the tube onto the tray so no pieces roll away.
Separate colors into small piles; you will reach for one color at a time.
Keep the instruction sheet visible but off the build area so it does not get buried.

Build the hull flat, then stand it up

The hull is the part most likely to fail, because it carries the whole ship. Assemble it as a flat panel first, then add a second layer on top of the same footprint. This double thickness is what keeps the ship from bowing when you press containers onto the deck. Once the hull panel is solid, attach the bow and stern shapes while the model is still lying down, where you can see the outline clearly.

Stack containers so the deck stays level

Containers are the visual payoff, but they also add weight high on the model. Build each container as a small closed block, then set it on the deck rather than pressing it down hard from above. Check the deck line with your eye after every two or three containers; if one side dips, you have a loose connection underneath, not a bad container. Rebuild that container on the table before placing it again.

Add details that survive play

A funnel, bridge, and a few contrasting containers make the ship read as a container ship rather than a generic boat. Attach these details with the same click-and-press motion you used on the hull, and keep them low and centered. Tall, thin masts look good on a shelf but snap off during play, so favor short stacks and wide bases if the ship will be handled. When you are done, the same pieces can be rebuilt as a tugboat or harbor scene, so nothing is locked into one model.

Container ship build steps

Sort the 70 pieces by color: Empty the tube onto a flat tray and group pieces by color so you are not hunting mid-build. Checkpoint: every piece is visible and none are on the floor.
Build the hull as a flat panel: Lay the hull out on the table and press each connection until it clicks, keeping the outline straight. Common mistake: building the hull upright first, which makes it hard to see gaps.
Add a second hull layer: Cover the same footprint with another layer of pieces to double the hull thickness. Checkpoint: the panel feels rigid and does not flex when you lift one corner.
Shape the bow and stern: Attach the front and back shapes while the model is still lying flat, matching the outline in the instructions. Common mistake: rushing the bow, which leaves the front uneven and hard to fix later.
Stand the hull up and add the deck: Turn the hull over onto its base and build the deck across the top, pressing down evenly. Checkpoint: the deck is level and the hull does not rock.
Build and place containers: Make each container as a small closed block on the table, then set it gently on the deck. Common mistake: pressing containers down hard, which can push the deck out of shape.
Add funnel, bridge, and details: Attach low, centered details with the same press-and-click motion used on the hull. Checkpoint: nothing wobbles when you nudge the ship.

Product facts

Tube - Container Ship: 70-piece Container Ship Tube with included instructions for a colorful container ship, plus ideas for cargo ships, tugboats, harbors, cranes, and 2D or 3D creations. One tube covers the whole build and gives you a fallback model if the ship does not work out on the first try.