Dive into Adventure!
Explore the depths with 413 Technic pieces

Build your own Deep-Sea Research Submarine with realistic features like spinning propellers and a grabbing arm. Perfect for young engineers and ocean enthusiasts!

🏛 Technic
Set #42201

Deep-Sea Research Submarine

The Deep-Sea Research Submarine is an excellent entry into the Technic world.

🏆 Best For: Perfect for younger Technic enthusiasts and LEGO fans aged 9+ ⏱ 4.5 hr build 🧩 413 pcs 🎂 Ages 9+
★★★☆☆ 3.9 from 2 reviews

Fans appreciate the set's engaging play features and realistic submarine design, making it a hit with younger builders. Some experienced Technic builders may find the build too simple, but overall, it's considered a good value for the price.

MSRP
$39.99
Best Price
$29.99
You Save
25% OFF
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📝 Our Take

The Deep-Sea Research Submarine is an excellent entry into the Technic world. Its functional features and vibrant color scheme make it an engaging build and a fun display piece, perfect for sparking imaginative underwater adventures.

This set is perfect for younger Technic enthusiasts and LEGO fans aged 9+. The build offers a satisfying challenge without being overly complex, making it a great introduction to more advanced Technic sets. The play features add an extra layer of enjoyment for kids who love creating stories and adventures.

Skip this if you are an advanced Technic builder looking for a complex and challenging project. While fun, this set is geared towards a younger audience and those new to Technic. Consider the LEGO Technic Ocean Explorer (42064-1) for a more intricate submarine build.

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🧱 Building Experience

🧩
413
Pieces
4.5h
Build Time
📊
Intermediate
Difficulty
📏
15cm × 25cm × 15cm
Dimensions
Build Highlights:
  • Working steering mechanism adds realism
  • Three spinning propellers enhance playability
  • Extending arm to grab and lift the barrel accessory
  • Bright color scheme and detailed cockpit

📈 Investment Analysis

↓ Price declining
B-
Investment Grade
⏳ Active
The Deep-Sea Research Submarine offers moderate investment potential. Its appealing design and play features are likely to attract a broad audience. As a Technic set, it may see steady appreciation, especially if it becomes a sought-after model for younger builders. However, its relatively low piece count and accessible price point suggest that appreciation may be gradual rather than rapid. Keeping the set sealed and in mint condition will be key to maximizing its investment value. Theme popularity and retirement status will also be key factors to watch.

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

📖 About This Set

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 realistic features – This creative building set includes lots of realistic features like the rotating propellers and grabbing arm to help kids explore how submarines work
  • Opening cockpit – The transparent cockpit opens to give access to the seat and controls
  • Barrel accessory – The set comes with a barrel accessory, which kids can pick up using the submarine’s extending grabbing arm
  • A gift for kids – This set makes a fun gift idea for kids who like exploring science and engineering toys or anyone who is interested in submarines and deep-sea exploration
  • A helping hand – Discover intuitive instructions in the LEGO® Builder app, where builders can zoom in and rotate models in 3D, track their progress and save sets as they develop new skills
  • An introduction to engineering – LEGO® Technic™ sets featurerealistic movement and mechanisms to introduce young LEGO builders to the universe of engineering
  • Measurements – A 413-piece set with a model measuring over 6 in. (15 cm) high, 9.5 in. (25 cm) long and 6 in. (15 cm) wide

Compare Similar Sets

Compared to other Technic sets in its price range, the Deep-Sea Research Submarine offers a unique underwater exploration theme. While sets like the LEGO Technic Monster Jam Monster Mutt Dalmatian (42150-1) provide different building experiences, this submarine stands out with its play features and vibrant design. It's a great choice for those specifically interested in underwater vehicles and exploration.

📦 Full Parts Inventory - 100 unique parts • 372 total pieces

Sticker Sheet for Set 42201-1 Sticker Sheet for...
Part #: 10110645 [No Color/Any Color]
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Technic Axle Pin ...
Part #: 11214 Red
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Technic Axle Pin ...
Part #: 11214 Dark Bluish Gray
Technic Pin Connector Perpendicular 2 x 4 Bent - Beam with 90 Hole Ø 4.8 Technic Pin Conne...
Part #: 11455 Black
Technic Beam 1 x 5 Thin with Axle Holes on Ends Technic Beam 1 x ...
Part #: 11478 Black
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Technic Beam 3 x ...
Part #: 14720 Dark Bluish Gray
Technic Axle 5 with Stop Technic Axle 5 wi...
Part #: 15462 Reddish Brown
Steering Wheel Small, 2 x 2 [Reinforced] Steering Wheel Sm...
Part #: 16091 Black
Brick Round 2 x 2, Pin Holes Brick Round 2 x 2...
Part #: 17485 White
Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Technic Axle Pin ...
Part #: 18651 Black
Technic Pin Connector Round 1L [Beam] Technic Pin Conne...
Part #: 18654 Yellow
Technic Pin Connector Round 1L [Beam] Technic Pin Conne...
Part #: 18654 Blue
Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Plate Special Rou...
Part #: 18674 Black
Brick Round Curved 1 x 1 x 1 1/3 Quarter Dome Brick Round Curve...
Part #: 1871 White
Brick Round Curved 1 x 1 x 1 1/3 Quarter Dome Brick Round Curve...
Part #: 1871 Black
Technic Pin Connector Hub with 1 Axle Technic Pin Conne...
Part #: 22961 Black
Technic Panel Fairing #7 3L Very Small Smooth, Side A Technic Panel Fai...
Part #: 2387 Yellow
Technic Panel Fairing #8 3L Very Small Smooth, Side B Technic Panel Fai...
Part #: 2389 Yellow
Technic Beam 1 x 7 Thick with Alternating Holes Technic Beam 1 x ...
Part #: 2391 Dark Bluish Gray
Technic Panel Fairing #9 Medium Triangle Smooth Technic Panel Fai...
Part #: 2395 Sand Blue
Technic Panel Fairing #10 Medium Triangle Smooth Technic Panel Fai...
Part #: 2403 Sand Blue
Technic Panel Curved and Bent 6 x 3 Technic Panel Cur...
Part #: 24116 Reddish Orange
Technic Axle 3 with Stop Technic Axle 3 wi...
Part #: 24316 Reddish Brown
Technic Panel Round Corner 5 x 3 x 2 Left Technic Panel Rou...
Part #: 2438 Sand Blue
Technic Panel Round Corner 5 x 3 x 2 Right Technic Panel Rou...
Part #: 2442 Sand Blue
Technic Panel Car Mudguard Arched 9 x 2 x 3, Arched Top #42 Technic Panel Car...
Part #: 2459 Sand Blue
Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Brick Round 1 x 1...
Part #: 25214 Yellow
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Plate Round 2 x 2...
Part #: 2654 White
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Plate Round 2 x 2...
Part #: 2654 Trans-Yellow
Technic Disc 3 x 3 Technic Disc 3 x 3
Part #: 2723 Dark Orange
Technic Axle Towball Technic Axle Towball
Part #: 2736 Light Bluish Gray
Technic Worm Gear Short Technic Worm Gear...
Part #: 27938 Dark Bluish Gray
Technic Pin Connector Hub with 2 Axles Technic Pin Conne...
Part #: 27940 Dark Bluish Gray
Technic Beam 2 x 3 Thick [90° Offset Centre Beam Hole] Technic Beam 2 x ...
Part #: 3167 Dark Bluish Gray
Technic Pin 3/4 Technic Pin 3/4
Part #: 32002 Tan
Technic Link 1 x 6 without Stoppers Technic Link 1 x ...
Part #: 32005a Black
Technic Beam 1 x 11.5 Double Bent Thick Technic Beam 1 x ...
Part #: 32009 Yellow
Technic Axle and Pin Connector Angled #2 - 180° Technic Axle and ...
Part #: 32034 Dark Bluish Gray
Technic Axle and Pin Connector Angled #2 - 180° Technic Axle and ...
Part #: 32034 Light Bluish Gray
Technic Beam 3 x 3 L-Shape Thin Technic Beam 3 x ...
Part #: 32056 Yellow
Technic Beam 3 x 3 L-Shape Thin Technic Beam 3 x ...
Part #: 32056 Black
Technic Axle 2 Notched Technic Axle 2 No...
Part #: 32062 14× Red
Technic Axle 5 Technic Axle 5
Part #: 32073 Yellow
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Technic Bush 1/2 ...
Part #: 32123b Light Bluish Gray
Technic Beam 2 x 4 L-Shape Thick Technic Beam 2 x ...
Part #: 32140 Dark Bluish Gray
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Technic Axle and ...
Part #: 32184 Light Bluish Gray
Technic Gear 12 Tooth Double Bevel Technic Gear 12 T...
Part #: 32270 10× Black
Technic Beam 1 x 9 Bent (7 - 3) Thick Technic Beam 1 x ...
Part #: 32271 Black
Technic Axle and Pin Connector Perpendicular Double Technic Axle and ...
Part #: 32291 Black
Technic Beam 1 x 4 Thin Technic Beam 1 x ...
Part #: 32449 Dark Bluish Gray
Technic Beam 1 x 3 Thick Technic Beam 1 x ...
Part #: 32523 Yellow
Technic Beam 1 x 7 Thick Technic Beam 1 x ...
Part #: 32524 Black
Technic Beam 1 x 11 Thick Technic Beam 1 x ...
Part #: 32525 Dark Bluish Gray
Equipment Paint Roller Brush Handle Smooth Handle Equipment Paint R...
Part #: 34076 Black
Technic Pin without Friction Ridges Lengthwise Technic Pin witho...
Part #: 3673 Light Bluish Gray
Technic Axle 4 Technic Axle 4
Part #: 3705 Red
Technic Axle 6 Technic Axle 6
Part #: 3706 Black
Technic Bush Technic Bush
Part #: 3713 Light Bluish Gray
Technic Axle Pin without Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 3749 Tan
Brick Round 2 x 2 with Axle Hole Brick Round 2 x 2...
Part #: 3941 Medium Nougat
Technic Pin Long without Friction Ridges, with Anti-Roll Notch Technic Pin Long ...
Part #: 39888 Tan
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Plate Round 2 x 2...
Part #: 4032a White
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Plate Round 2 x 2...
Part #: 4032a Medium Nougat
Technic Beam 1 x 2 Thin Technic Beam 1 x ...
Part #: 41677 Blue
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Technic Axle and ...
Part #: 42003 Black
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Technic Axle and ...
Part #: 42003 Yellow
Technic Axle Connector with Axle Hole [Reinforced] Technic Axle Conn...
Part #: 42135 Black
Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Technic Driving R...
Part #: 42195 Blue
Wheel 11 x 8 with Center Groove Wheel 11 x 8 with...
Part #: 42610 Light Bluish Gray
Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Technic Pin Long ...
Part #: 42924 Blue
Technic Axle Pin with Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 43093 25× Blue
Technic Axle 7 Technic Axle 7
Part #: 44294 Light Bluish Gray
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes] Technic Pin Conne...
Part #: 44874 Black
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes] Technic Pin Conne...
Part #: 44874 Red
Technic Axle 3 Technic Axle 3
Part #: 4519 Light Bluish Gray
Technic Beam Frame 3 x 13 with 1 Center Cross Beams, 2 Openings Thick Technic Beam Fram...
Part #: 4526 Black
Technic Axle Connector Double Flexible [Rubber] Technic Axle Conn...
Part #: 45590 Black
Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Technic Tooth 1 x...
Part #: 48267 Black
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends [No Side Slots] Hinge Cylinder 1 ...
Part #: 53923 Light Bluish Gray
Technic Axle 5.5 with Stop [Rounded Short End] Technic Axle 5.5 ...
Part #: 59426 Dark Bluish Gray
Technic Axle Connector Smooth [with x Hole + Orientation] Technic Axle Conn...
Part #: 59443 Dark Bluish Gray
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Technic Beam 1 x ...
Part #: 60483 Dark Bluish Gray
Technic Beam 3 x 3 T-Shape Thick Technic Beam 3 x ...
Part #: 60484 Black
Technic Pin with Friction Ridges Lengthwise with No Center Slots Technic Pin with ...
Part #: 61332 Black
Slope 18° 2 x 1 x 2/3 with 4 Slots / Grate Slope 18° 2 x 1 x...
Part #: 61409 Dark Bluish Gray
Technic Universal Joint 3L [Complete Assembly] Technic Universal...
Part #: 61903 Light Bluish Gray
Technic Pin Connector Round [Slotted] Technic Pin Conne...
Part #: 62462 Yellow
Technic Pin Connector Round [Slotted] Technic Pin Conne...
Part #: 62462 Black
Technic Panel Fairing #6 Long Smooth, Side B Technic Panel Fai...
Part #: 64393 Sand Blue
Technic Panel Fairing #5 Long Smooth, Side A Technic Panel Fai...
Part #: 64681 Sand Blue
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Technic Pin Long ...
Part #: 65304 17× Black
Technic Axle and Pin Connector Perpendicular Technic Axle and ...
Part #: 6536 Light Bluish Gray
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Square Holes] Technic Pin Conne...
Part #: 65487 Dark Bluish Gray
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Square Holes] Technic Pin Conne...
Part #: 65487 Yellow
Technic Axle 3 with Stud Technic Axle 3 wi...
Part #: 6587 Dark Tan
Technic Gear 12 Tooth Bevel Technic Gear 12 T...
Part #: 6589 Tan
Technic Beam 1 x 9 Bent (6 - 4) Thick Technic Beam 1 x ...
Part #: 6629 Yellow
Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole Technic Pin with ...
Part #: 66906 Red
Wheel 41 x 15 Wheel 41 x 15
Part #: 68327 Blue
Windscreen 8 x 8 x 3 Dome with Dual 2 Fingers - 7 Teeth Windscreen 8 x 8 ...
Part #: 69320 Trans-Clear
Technic Gear 20 Tooth with Axle Hole [+ Opening] Technic Gear 20 T...
Part #: 69779 Dark Azure
Technic Axle and Pin Connector Perpendicular Double Split [Reinforced] Technic Axle and ...
Part #: 69819 Black
Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick Technic Beam 2 x ...
Part #: 71708 Sand Blue
Technic Beam 1 x 15 Thick with Alternating Holes Technic Beam 1 x ...
Part #: 71710 Dark Bluish Gray
Technic Pin Long 3l, No Friction Ridges, with Stop and Hole Technic Pin Long ...
Part #: 77765 Light Bluish Gray
Bar 2L with Stop in Center Bar 2L with Stop ...
Part #: 78258 Black
Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes Technic Pin Conne...
Part #: 87408 Black
Propeller 7 Blade 6 Diameter Propeller 7 Blade...
Part #: 87751 Flat Silver
Technic Pin 1/2 with Friction Technic Pin 1/2 w...
Part #: 89678 24× Red
Tile Round 1 x 1 Tile Round 1 x 1
Part #: 98138 Trans-Yellow
Technic Axle 4 with Centre Stop Technic Axle 4 wi...
Part #: 99008 Tan
The set includes a good selection of Technic pins and axles, useful for builders looking to expand their collection of functional elements. The Sand Blue Technic Beams are also a nice addition for MOC builders seeking unique color options.

🛒 Where to Buy

💎 Notable Parts

Blue Technic Axle Pin with Friction Ridges Lengthwise (25x) $1.25
Black Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] (17x) $1.70
Black Technic Gear 12 Tooth Double Bevel (10x) $1.00
Sand Blue Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick (6x) $1.50
Est. BrickLink Part Value
$5.45

💡 MOC Potential

🚢 Alternate submarine designs with different functionalities
🤖 Underwater exploration robot or drone
🚗 Surface exploration vessel or research boat

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📖 Building Instructions 2

Deep-Sea Research Submarine Instructions
BI 3106, 116+4, 42201 V29
Download PDF
Deep-Sea Research Submarine Instructions
BI 3106, 116+4, 42201 V39
Download PDF

Charts Inventory Statistics

100
Unique Parts
372
Total Pieces
0
Minifigures
Inventory Version: 1