Navigation aid (lantern / fog signal)
Offshore platform marking unit to IALA R0139 on a galvanised pedestal: marine lantern with a Fresnel prism drum (size from the nominal range, white / yellow / red, emissive when lit), bird spikes and lightning finial, and an electronic fog signal of stacked horn emitters with its driver box. Control / monitoring box with tag plate and cable to deck, earth boss.
Installation
Copies electrical/navigation-aid.tsx and the shared lib/ into src/components/deck-twin/. Needs three, @react-three/fiber and @react-three/drei. See installation for the manual route.
Usage
import { Canvas } from '@react-three/fiber'
import { OrbitControls } from '@react-three/drei'
import { Stage } from './components/deck-twin/lib/stage'
import { NavigationAid } from './components/deck-twin/electrical/navigation-aid'
export default function Scene() {
return (
<Canvas shadows camera={{ position: [8, 5, 9], fov: 35 }}>
<Stage>
<NavigationAid />
</Stage>
<OrbitControls makeDefault />
</Canvas>
)
}
Props
| Prop | Type | Default | Range |
|---|---|---|---|
kind | "combined" | "lantern" | "foghorn" | null | |
color | "white" | "yellow" | "red" | null | |
range | number (nm) | null | 2 – 15 |
height | number (m) | null | 0.6 – 4 |
lit | boolean | null | |
tag | string | null | |
...group | position, rotation, scale… |
P&ID
On layouts: a lantern (circle) with light rays at the platform corners, labelled with its character (e.g. Mo(U) 15s, 10 nm) and a fog signal marked FOG or a horn outline.
Not on P&IDs. Obstruction lights on stacks and cranes are smaller red lamps; status beacons on F&G layouts are alarm-beacon.
kindcolorrangeheighttagTypical suppliers
Orga · Sealite. The geometry is generic and sized from public standards. It is not vendor CAD.
For agents
Machine-readable entry with props, ranges, defaults and ports:
Or fetch /r/navigation-aid.json, or copy a ready-made instruction:
Add the Deck Twin "Navigation aid (lantern / fog signal)" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add navigation-aid` (it copies the file and the shared lib into src/components/deck-twin/), then `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info navigation-aid` for its props, ranges and ports. Render <NavigationAid /> inside a React Three Fiber <Canvas shadows>, wrapped in <Stage> from src/components/deck-twin/lib/stage. Set props from my data (metres, NPS in inches, ASME class) and leave the rest at defaults. Install three, @react-three/fiber, @react-three/drei and @types/three if they're missing. Full guide: https://decktwin.com/skill/SKILL.md