29/05/2026
300 million people's homes are at risk from rising sea levels - and coastal infrastructure is next.
Rising sea levels and stronger storm events are no longer a future problem. They are already accelerating coastal erosion, overtopping, and breakwater failure risks across ports and shorelines worldwide.
A recent estimate suggests rising sea levels pose an existential threat to the homes of 300 million people - and the same forces threatening communities are also threatening ports, harbours, sea walls, coastal highways, and industrial watertront assets.
For civil and coastal engineers, the question is becoming more urgent: Are existing sea defence systems designed for tomorrow's wave climate?
That's why armour unit selection matters. In this quick guide we compare two proven coastal protection solutions:
TETRAPOD STABILITY:
Proven multi-layer performance in harsh marine conditions
WAVE DISSIPATION:
Breaks wave energy in multiple directions
INSTALLATION:
Flexible placement and scalable mass production
XBLOC STABILITY:
High hydraulic stability through interlocking geometry
WAVE DISSIPATION:
Reduces reflection and scour under extreme wave attack
INSTALLATION:
Efficient single-layer placement with fewer units required
With more coastal defence projects being driven by climate adaptation funding, decision makers are increasingly focused on lifecycle performance, installation speed, and long-term resilience.
At Armcon, we support sea defence and breakwater projects with precision-engineered mould solutions for large-scale precast armour unit production.
If you're working on a breakwater upgrade, port expansion, or coastal reinforcement project - let's talk.