How many pieces does the LEGO Deep-Sea Research Submarine (42201-1) have?

The LEGO Deep-Sea Research Submarine set (42201-1) contains 413 pieces. It was released in 2025 as part of the LEGO Technic theme.

How can I find missing parts for LEGO set 42201-1?

On BrickMissing you can check which parts from the LEGO Deep-Sea Research Submarine (42201-1) you already own. Add your LEGO collection and we'll show exactly which of the 413 pieces you're missing and which you already have.

Can I build the LEGO Deep-Sea Research Submarine with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 413 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Deep-Sea Research Submarine from?

The LEGO Deep-Sea Research Submarine (42201-1) belongs to the LEGO Technic theme. You can browse all Technic sets on BrickMissing to find more sets from this theme.

Deep-Sea Research Submarine

🏷️ 42201-1•🎨 Technic•📅 2025•🧱 413 parts•Intermediate

The LEGO Technic Deep-Sea Research Submarine (42201-1) from 2025 enables ocean exploration with 413 pieces. It features an operational steering mechanism and three spinning propellers for movement. Inside, the cockpit includes a seat and controls for a pilot. This submarine also integrates three air tanks for buoyancy, and an extending arm to grab the barrel accessory from the seabed. The Technic design showcases engineering principles through its gear-driven steering, offering a detailed representation of deep-sea vehicles. Technic pins secure the arm's articulation, ensuring sturdy movement.

Parts Inventory

🧱 413 parts

Part	Color	Qty
Sticker Sheet for Set 42201-1 10110645	Unknown	1×
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle 11214	Red	7×
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle 11214	Dark Bluish Gray	2×
Technic Pin Connector Perpendicular 2 x 4 Bent - Beam with 90 Hole Ø 4.8 11455	Black	4×
Technic Beam 1 x 5 Thin with Axle Holes on Ends 11478	Black	4×
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] 14720	Dark Bluish Gray	1×
Technic Axle 5 with Stop 15462	Reddish Brown	4×
Steering Wheel Small, 2 x 2 [Reinforced] 16091	Black	1×
Brick Round 2 x 2, Pin Holes 17485	White	6×
Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle 18651	Black	5×

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Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes]	14720	Dark Bluish Gray	1×
Technic Axle 5 with Stop	15462	Reddish Brown	4×
Steering Wheel Small, 2 x 2 [Reinforced]	16091	Black	1×
Brick Round 2 x 2, Pin Holes	17485	White	6×
Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle	18651	Black	5×
Technic Pin Connector Round 1L [Beam]	18654	Yellow	6×
Technic Pin Connector Round 1L [Beam]	18654	Black	3×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	18674	Black	2×
Brick Round Curved 1 x 1 x 1 1/3 Quarter Dome	1871	White	6×
Brick Round Curved 1 x 1 x 1 1/3 Quarter Dome	1871	Black	6×
Technic Pin Connector Hub with 1 Axle	22961	Black	4×
Technic Panel Fairing #7 3L Very Small Smooth, Side A	2387	Yellow	3×
Technic Panel Fairing #8 3L Very Small Smooth, Side B	2389	Yellow	3×
Technic Beam 1 x 7 Thick with Alternating Holes	2391	Dark Bluish Gray	2×
Technic Panel Fairing #9 Medium Triangle Smooth	2395	Sand Blue	1×
Technic Panel Fairing #10 Medium Triangle Smooth	2403	Sand Blue	1×
Technic Panel Curved and Bent 6 x 3	24116	Reddish Orange	1×
Technic Axle 3 with Stop	24316	Reddish Brown	2×
Technic Panel Round Corner 5 x 3 x 2 Left	2438	Sand Blue	1×
Technic Panel Round Corner 5 x 3 x 2 Right	2442	Sand Blue	1×
Technic Panel Car Mudguard Arched 9 x 2 x 3, Arched Top #42	2459	Sand Blue	2×
Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end	25214	Yellow	6×
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]	2654	Trans-Yellow	2×
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]	2654	White	3×
Technic Disc 3 x 3	2723	Dark Orange	2×
Technic Axle Towball	2736	Light Bluish Gray	2×
Technic Worm Gear Short	27938	Dark Bluish Gray	1×
Technic Pin Connector Hub with 2 Axles	27940	Dark Bluish Gray	3×
Technic Beam 2 x 3 Thick [90° Offset Centre Beam Hole]	3167	Dark Bluish Gray	1×
Technic Pin 3/4	32002	Tan	2×
Technic Link 1 x 6 without Stoppers	32005a	Black	2×
Technic Beam 1 x 11.5 Double Bent Thick	32009	Yellow	2×
Technic Axle and Pin Connector Angled #2 - 180°	32034	Light Bluish Gray	3×
Technic Axle and Pin Connector Angled #2 - 180°	32034	Dark Bluish Gray	2×
Technic Beam 3 x 3 L-Shape Thin	32056	Yellow	4×
Technic Beam 3 x 3 L-Shape Thin	32056	Black	4×
Technic Axle 2 Notched	32062	Red	14×
Technic Axle 5	32073	Yellow	9×
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced	32123b	Light Bluish Gray	1×
Technic Beam 2 x 4 L-Shape Thick	32140	Dark Bluish Gray	6×
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole	32184	Light Bluish Gray	2×
Technic Gear 12 Tooth Double Bevel	32270	Black	10×
Technic Beam 1 x 9 Bent (7 - 3) Thick	32271	Black	2×
Technic Axle and Pin Connector Perpendicular Double	32291	Black	4×
Technic Beam 1 x 4 Thin	32449	Dark Bluish Gray	4×
Technic Beam 1 x 3 Thick	32523	Yellow	2×
Technic Beam 1 x 7 Thick	32524	Black	3×
Technic Beam 1 x 11 Thick	32525	Dark Bluish Gray	3×
Equipment Paint Roller Brush Handle Smooth Handle	34076	Black	2×
Technic Pin without Friction Ridges Lengthwise	3673	Light Bluish Gray	2×
Technic Axle 4	3705	Red	3×
Technic Axle 6	3706	Black	1×
Technic Bush	3713	Light Bluish Gray	3×
Technic Axle Pin without Friction Ridges Lengthwise	3749	Tan	8×
Brick Round 2 x 2 with Axle Hole	3941	Medium Nougat	1×
Technic Pin Long without Friction Ridges, with Anti-Roll Notch	39888	Tan	3×
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	4032a	White	6×
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	4032a	Medium Nougat	1×
Technic Beam 1 x 2 Thin	41677	Black	4×
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes	42003	Black	2×
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes	42003	Yellow	5×
Technic Axle Connector with Axle Hole [Reinforced]	42135	Black	2×
Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls]	42195	Black	2×
Wheel 11 x 8 with Center Groove	42610	Light Bluish Gray	1×
Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot	42924	Black	7×
Technic Axle Pin with Friction Ridges Lengthwise	43093	Black	25×
Technic Axle 7	44294	Light Bluish Gray	1×
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes]	44874	Red	1×
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes]	44874	Black	1×
Technic Axle 3	4519	Light Bluish Gray	4×
Technic Beam Frame 3 x 13 with 1 Center Cross Beams, 2 Openings Thick	4526	Black	2×
Technic Axle Connector Double Flexible [Rubber]	45590	Black	2×
Technic Tooth 1 x 3 with Axle Hole [Hollow Underside]	48267	Black	1×
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends [No Side Slots]	53923	Light Bluish Gray	2×
Technic Axle 5.5 with Stop [Rounded Short End]	59426	Dark Bluish Gray	1×
Technic Axle Connector Smooth [with x Hole + Orientation]	59443	Dark Bluish Gray	9×
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole	60483	Dark Bluish Gray	1×
Technic Beam 3 x 3 T-Shape Thick	60484	Black	2×
Technic Pin with Friction Ridges Lengthwise with No Center Slots	61332	Black	32×
Slope 18° 2 x 1 x 2/3 with 4 Slots / Grate	61409	Dark Bluish Gray	2×
Technic Universal Joint 3L [Complete Assembly]	61903	Light Bluish Gray	1×
Technic Pin Connector Round [Slotted]	62462	Black	2×
Technic Pin Connector Round [Slotted]	62462	Yellow	2×
Technic Panel Fairing #6 Long Smooth, Side B	64393	Sand Blue	1×
Technic Panel Fairing #5 Long Smooth, Side A	64681	Sand Blue	1×
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole]	65304	Black	17×
Technic Axle and Pin Connector Perpendicular	6536	Light Bluish Gray	3×
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Square Holes]	65487	Dark Bluish Gray	4×
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Square Holes]	65487	Yellow	4×
Technic Axle 3 with Stud	6587	Dark Tan	1×
Technic Gear 12 Tooth Bevel	6589	Tan	2×
Technic Beam 1 x 9 Bent (6 - 4) Thick	6629	Yellow	2×
Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole	66906	Red	2×
Wheel 41 x 15	68327	Black	3×
Windscreen 8 x 8 x 3 Dome with Dual 2 Fingers - 7 Teeth	69320	Trans-Clear	1×
Technic Gear 20 Tooth with Axle Hole [+ Opening]	69779	Dark Azure	1×
Technic Axle and Pin Connector Perpendicular Double Split [Reinforced]	69819	Black	2×
Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick	71708	Sand Blue	6×
Technic Beam 1 x 15 Thick with Alternating Holes	71710	Dark Bluish Gray	1×
Technic Pin Long 3l, No Friction Ridges, with Stop and Hole	77765	Light Bluish Gray	1×
Bar 2L with Stop in Center	78258	Black	2×
Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes	87408	Black	2×
Propeller 7 Blade 6 Diameter	87751	Flat Silver	3×
Technic Pin 1/2 with Friction	89678	Red	24×
Tile Round 1 x 1	98138	Trans-Yellow	6×
Technic Axle 4 with Centre Stop	99008	Tan	2×

Build DNA

Parts inventory insights for Deep-Sea Research Submarine

413 pieces puts this build -36% against the average Technic set and -35% against the average 2025 release.

LEGOTECHNIC

Vs average Technic set

-36%-234 parts

This set413

Average set647

Average Technic set: 647 pieces across 450 other sets.

Vs average 2025 set

-35%-224 parts

This set413

Average set637

Average 2025 set: 637 pieces across 561 other sets.

Color profile

19different colors

Dominant color

Black

Black167x

40%

Red51x

12%

Yellow48x

12%

Dark Bluish Gray43x

10%

Unique parts

4.1 pieces per unique type

100

Repeat factor

Average pieces per unique type.

Most used part

Technic Pin with Friction Ridges Lengthwise with No Center Slots

32x

Results are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.

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Build Insights🧩100unique parts🎨19different colors📊21.7avg. parts per color🏆32×Technic Pin with Friction Ridges Lengthwise with No Center Slots

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