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IALA buoyage for both regions, with each mark shown beside its chart symbol.

Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)
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Shipped insured and fully tracked directly from the manufacturer's warehouse in Denmark or England. Free delivery in the Netherlands from € 75.
14-day right of withdrawal under European law, with manufacturer warranty handled by us. Contact us first and we send you a return note.
ROADrule IALA identifies the International Association of Lighthouse Authorities Maritime Buoyage System for Regions A and B, including every type of fixed and floating mark.
From buoy to chart symbol
Actual views of buoys and beacons sit beside their chart symbols, together with 20 light characteristics, manoeuvring and warning signals, 12 rules of the road and 40 navigation-aid definitions.
Whether in the classroom or at the helm, decisions come quickly and confidently.
Key features
- IALA Regions A and B
- Marks with chart symbols
- 20 light characteristics
- Magnifier
Specifications
| Feature | Detail |
|---|---|
| Brand | Weems & Plath |
| Type | Buoyage slide rule (IALA A/B) |
| Dimensions | 407 × 133 mm (16 × 5¼ in) |
| Content | 20 light characteristics, 12 rules, 40 definitions |
| Material | Plastic with magnifier |
| Warranty | Weems & Plath Limited Lifetime Warranty |
| Weems & Plath item number | 292 |
| EAN | 0721002004185 |
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Explore our navigation aids and parallel rules and plotters, or see the full range on our Weems & Plath brand page.
This piece comes from Weems & Plath of Annapolis, USA, makers of navigation instruments since 1928, and is supplied by Shipsclocks.com.
Frequently asked questions
Which region is the UK and Europe?
IALA Region A; this ROADrule shows both A and B.
- Material
- Plastic







