What age is the Catamaran recommended for?

This set is recommended for ages 8+.

When was the Catamaran released?

Catamaran was released in 2020.

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🏛 Technic

Set #42105

Catamaran

The LEGO Technic Catamaran is a surprisingly fun and functional model.

Before you buy

Who it's for: Ages 8+ · Intermediate build Perfect for older kids and adults interested in Technic builds and nautical themes.
Build: 404 pieces · about 3 hours Build time is an estimate.
Price: $49.99 list price · 12.4¢ per piece
Availability: Retired at LEGO

★★★☆☆ 3.9 community rating from 67 ratings

Fans appreciate the Catamaran's unique floating ability and engaging build process for its size. Some reviewers note that the model may feel somewhat basic for experienced Technic builders and that the sails are simple.

$49.99

Check price on eBay

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

The LEGO Technic Catamaran is a surprisingly fun and functional model. This set brings the thrill of sailing to the LEGO world, offering a unique building experience and the novelty of a floating Technic creation.

This set is perfect for LEGO enthusiasts of all ages, especially those interested in Technic and nautical themes. With a manageable piece count and engaging building process, it's a great introduction to Technic concepts and offers a satisfying display model.

Skip this if you are looking for complex building techniques or high display value. While fun, it's a relatively simple build, and might not satisfy expert builders; consider the Ocean Explorer (42064) for a more challenging nautical build.

✨ New

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How does the Catamaran's design ensure it floats and remains stable in water? What are the key differences between building a Technic set versus a standard LEGO set? How does the value of the Catamaran compare to other retired Technic sets with similar piece counts? What's the best way to display the Catamaran to showcase its design and functionality?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

404

Pieces

⏱

Estimated Build Time

📊

Intermediate

Difficulty

📏

32cm × 22cm × 44cm

Dimensions

Build Highlights:

Experience building a functional catamaran with working sails and rudder.
Learn about dagger board mechanics and their role in boat stability.
Enjoy the unique feature of a LEGO Technic model that actually floats on water.
Discover the classic twin-hull catamaran design recreated in LEGO form.

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

Not enough price history for a trend

Investment Grade

⏳ Retired

The LEGO Technic Catamaran (42105) presents a moderate investment opportunity. As a retired set, its value will likely appreciate over time, especially given the Technic theme's popularity and the unique floating feature. However, the relatively low piece count and original MSRP may limit significant price surges. Monitor market trends and consider holding for long-term gains. The theme is popular, but the set itself isn't particularly rare or sought after, so expect steady but not explosive growth.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

⚖ Compare Similar Sets

The Catamaran offers a unique floating element not found in many Technic sets. Compared to sets like the Race Truck (42104), it provides a different building experience focused on nautical engineering. While the Ocean Explorer (42064) offers a more complex build, the Catamaran is a more affordable and accessible option for those new to Technic or interested in boats.

📦 Parts Inventory

Official piece count: 404
Parts cataloged in this inventory: 66 unique parts, 405 pieces

LEGO counts 404 pieces. This inventory comes from a separate parts catalog and lists 405; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.