10 style concepts for Main Engines, Propulsion, and Crane icons. Each concept renders all three icons in a consistent style.
Clean 1.5px stroke line art
Solid navy shapes, no strokes
Two-tone with light-blue accent
Bold 3px strokes, friendly feel
Grid background, precise lines
Skewed 3D-ish perspective
Icons inside circular badges
Navy→blue gradient strokes
Rough filter for sketch feel
Flat shapes with blue accents
24×24, 1.8px stroke, matches existing icon set
24×24, 2px stroke (exact Lucide default)
Thin stroke + pale-blue fill on key parts
Four variations — pick one for the Passenger Capacity field
Five variations — pick one for the Propulsion field
Ten more variations — pick one for the Propulsion field