AUK Marine and Mining

North Riding, Johannesburg

Risk & Response Model · South African Coastline

From wave height to
wet-tow readiness.

A single working model carrying the coastline from hazard scoring through to the minute an Emergency Towing Vessel connects a tow line — built on the navigational hazard matrix, area ratings and ETV response methodology developed for South Africa's coastal salvage strategy.

Live coastal risk picture

Seven areas. One coastline.

Hover a coastline segment, port, or hotspot marker — or a row in the register — to see how they connect. Colour reflects the composite hazard rating for each area.

Richards Bay Durban East London Port Elizabeth Mossel Bay Cape Town Saldanha Bay 1 2 3 4 5 6 7 EEZ ≈ 200 nm (illustrative)
Moderate Strong Critical Navigational hotspot

Five linked modules

One model, start to finish.

From hazard scoring through to the minute a response asset connects — every module feeds the same coastline picture.

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Hazard Index

19 factors across 5 categories, weighted into a composite score — environmental, traffic, historical, charts, physical coastline.

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Risk Drivers

All 7 areas ranked and mapped, with ports and known navigational hotspots overlaid on the real coastline.

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Mitigating Measures

AIS, VTS, LRIT, TSS and more — tracked by status and efficacy, adjustable per scenario.

⚓

ETV Response

DNV bollard-pull physics and time-to-connection vs. time-to-grounding, area by area.

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Oil Spill Model

Fay spreading and Okubo diffusion theory model drift, footprint growth, and landfall timing live.

7

Coastal areas

19

Hazard factors

5

Known hotspots

2017

Source strategy

Grounded in named physics

Every number traces to a formula.

Fay (1971)

Three-regime oil slick spreading theory — gravity-inertia, gravity-viscous, surface-tension-viscous.

Okubo (1971)

Empirical turbulent horizontal diffusion, fitted to open-ocean dye-release experiments.

DNV towage

Standard offshore bollard-pull formula — wind, current and wave-drift force components.

AUK, 2017

Source hazard matrix, area ratings and ETV methodology from the original salvage strategy.

A screening-level model for briefing and scenario comparison, not operational response. Get in touch if you'd like to explore making it operational — live weather/AIS feeds, validated against real incidents, with an availability commitment scoped to your needs.

See it on your own coastline data.

A walkthrough takes 20 minutes and covers every module — hazard scoring through to incident response.

Request a walkthrough