The Holland 1 was the pioneering creation of Irish engineer John Philip Holland, recognized as one of the first truly modern submarines. Launched in 1901, it marked a turning point in naval engineering with its innovative use of internal combustion engines for surface travel and electric motors for underwater propulsion — a design principle that influenced submarine construction for decades.

My 950 mm 3D printable model of the Holland 1 faithfully captures the unique proportions and form of this historic vessel. It is composed of 16 separate high-poly STL files, designed for precise assembly and smooth surface detailing. While primarily intended as a display model, the internal layout allows for creative adaptation — making it suitable for educational builds, historical collections, or even RC conversion with some ingenuity.

3D printing settingsThis model is optimized for easy 3D printing using standard FDM printers with a build volume of 22×22×25 cm or larger. All parts are oriented and divided to minimize support usage and ensure strong layer adhesion. A layer height of 0.16–0.2 mm, 15–20% infill, and two to three perimeters are recommended for best surface finish and durability. Hull parts can be printed with thicker walls for watertight integrity if RC conversion is intended. Using PLA or PETG is advised for general builds, while ABS or ASA may be chosen for higher heat resistance or outdoor display. For a smoother, museum-quality finish, sanding and primer coating before painting will highlight the elegant form of this historic submarine.