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42201 LEGO Technic Deep-Sea Research Submarine thumbnail image

42201 LEGO Technic Deep-Sea Research Submarine
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42201 LEGO Technic Deep-Sea Research Submarine
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail

LEGO 42201 Deep-Sea Research Submarine is a Technic set currently available at retail for $36.99 and is projected to retire in mid and late 2026. Current new-sealed secondary market prices range from $30 to $39, with the average below MSRP at $31.

Forecast Model

This represents the expected annual growth (CAGR) based solely on a forecast model.
LEGO 42201 Deep-Sea Research Submarine is a Technic set released in 2025, containing 413 pieces. The model depicts a research sub with functional steering and three spinning propellers. Details include three external air tanks and a cockpit with a seat and controls. An extending arm is provided to grab and lift the included barrel accessory.

Once retired, the expected annual growth will be close to 3% after the second year, valuing the set between $40 and $41 shortly after it is retired.
All regions

For Sale (New/Sealed)

This chart shows the sales listing trends of 42201 Deep-Sea Research Submarine.
 (US) Technic Deep-Sea Research Submarine 42201 Building Toy 413 pcs NEW Sealed
BrickEconomy Choice
$27.99
(US) 42201 TECHNIC: Deep-Sea Research Submarine New Factory Sealed in Box Retire $27.99
-24.3%
(US) 42201 TECHNIC: Deep-Sea Research Submarine New Factory Sealed in Box Retiring Dec 202... $27.99
-24.3%
(CA) Technic Deep-Sea Research Submarine 42201 $28.54
-22.8%
(US) Technic Deep-Sea Research Submarine 42201 Building Set 413 Pcs New Sealed $28.99
-21.6%
(US) Technic Deep-Sea Research Submarine Toy - Building Toy for Kids, Boys and Girls, Ages... $28.99
-21.6%
(US) TECHNIC: Deep-Sea Research Submarine (42201) - NEW IN BOX, UNOPENED $29.00
-21.6%
(US) TECHNIC: Deep-Sea Research Submarine (42201) $29.00
-21.6%
(US) Technic Deep-Sea Submarine 42201 $29.00
-21.6%
(US) Deep Sea Research Submarine 42201 Building Toy Set Technic NEW $29.50
-20.2%
(US) Technic Deep-Sea Research Submarine Toy - Building Toy for Kids Ages 9+ $29.89
-19.2%
(US) TECHNIC: Deep-Sea Research Submarine (42201) NEW IN BOX $29.95
-19.0%
(US) Technic Deep-Sea Research Submarine Toy (42201) Brand New Sealed, Fast Ship $29.99
-18.9%
(US) Technic Deep-Sea Research Submarine 42201 $29.99
-18.9%
(US) TECHNIC: Deep-Sea Research Submarine (42201) $29.99
-18.9%
(US) Technic Deep-Sea Research Submarine Toy - 413 Pieces - 42201 NEW SEALED $29.99
-18.9%
(US) Technic Deep-Sea Research Submarine 42201 Building Set 413 Pcs New Sealed $29.99
-18.9%
(US) Technic 42001 Deep-Sea Research Submarine 413 Pieces New Sealed $30.00
-18.9%
(US) TECHNIC: Deep-Sea Research Submarine (42201) $30.00
-18.9%
(US) TECHNIC: Deep-Sea Research Submarine (42201) $31.11
-15.9%
(US) Technic 42201 Deep-Sea Research Submarine 413-Piece Set, 9+ $31.87
-13.8%
Show 33 more listings

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Value $9.97
Growth  +99.8%
Annual growth 32.4%

My Collection

Deep-Sea Research Submarine Reviews

30 reviews
4.8
Collectors
Investors
“On to one of 2025’s most unusual Technic sets, the 413-piece 42201 Deep-Sea Research Submarine. Reminiscent of the largely forgotten 1997 Divers sub-theme, 42201 looks rather un-Technic-y, despite being constructed almost exclusively from Technic pieces. A selection of cogs... More operate the pitch of the propellors and the grab-arm.”
Full review at thelegocarblog.com
BrickEconomy Member Review
“The LEGO Technic Deep-Sea Research Submarine (42201) is a highly functional set packed with intricate mechanisms and a fresh, colorful design. With rotating propellers, a tiltable assembly, and a working grabber arm, the set offers a hands-on building experience and great play value. The unique sand-blue elements and clever engineering make this set a standout.”
 

About Technic

TECHNIC is one of The LEGO Company's main lines based on creating detailed model machines and mechanical toys with specialized beams, axles, gears and connectors and primarily designed for older children and adults. The theme was first introduced as the Expert Builder series in 1977, but was officially renamed as TECHNIC in 1984. TECHNIC is still an active theme, and is one of the longest running themes in LEGO history. While most TECHNIC sets are vehicles that use pieces to mimic real vehicles, such as engine pieces, suspension, pneumatic, and transmission pieces, the TECHNIC parts have been used by various other System themes as well as LEGO Mindstorms.
Read more
Inspire kids aged 9 and up to explore the secrets of the oceans with this Deep-Sea Research Submarine toy set (42201). The model is packed with features like those found on real submarines, including steering, 3 spinning propellers, 3 air tanks, and a cockpit with seat and controls. The submarine features an extending arm to grab and lift the barrel accessory as kids play out their own sea-bed adventures.

This submarine model kit comes from a range of LEGO Technic sets which feature realistic movement to introduce young builders to the universe of engineering. This set makes a great gift for kids who enjoy buildable vehicle toys.

Let the LEGO Builder app guide your child on an intuitive building adventure, allowing them to zoom in and rotate models in 3D, save sets and track their progress.

Submarine toy set for kids aged 9 and up Let young science and engineering fans create their own deep-sea adventures with this LEGO Technic Deep-Sea Research Submarine toy

Lots of...
Description provided by LEGO©