Carbon fiber materials have excellent tensile strengths, especially under steady-ish loads.
The front of an icebreaker's hull mostly faces compressive loads, with lots of shocks from hitting ice.
Try searching for "OceanGate Titan" if you want to read more about the performance of carbon fiber composites under large compressive loads in a marine environment.
> Have you here contested claims that hemp - biocomposite with resin - has greater Tensile Strength and Compressive Strength than steel and aluminum (and carbon fiber with sustainable binder)?
The front of an icebreaker's hull mostly faces compressive loads, with lots of shocks from hitting ice.
Try searching for "OceanGate Titan" if you want to read more about the performance of carbon fiber composites under large compressive loads in a marine environment.