Developer builds interactive marina slip map using React and plain SVG

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A developer created a slip map dashboard for marinas and boat charter companies using React state and plain SVG, without relying on any external map library. The map covers three piers and fifty individually clickable slips, each displaying occupancy status such as occupied, arriving, or vacant. Accessibility was prioritized through keyboard navigation, ARIA labels, and colorblind-friendly visual cues like dashed outlines for empty slips. CSS variables from the shadcn/ui design system enable automatic light and dark mode theming with no additional code. The developer notes this SVG-based approach suits fixed floor-plan layouts and has since applied the same technique to a mushroom farm rack map, with the full marina dashboard available as a template called Harborline.

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