LEGO 42201 Deep-Sea Research Submarine Building Instructions

LEGO 42201 Deep-Sea Research Submarine is a 2025 LEGO Technic set focused on the submarine build. The details table below lists 413 pieces, an official MSRP of 34.99, along with the set number, theme and year.

About this LEGO instruction page

Watch the step-by-step LEGO instructions video for LEGO 42201 Deep-Sea Research Submarine. You can pause between steps, follow the build order, and use the related instruction links below to find more sets from the same theme.