What a Second World War convoy could change before Trafalgar

What would happen if a Second World War convoy of machine parts, weapons, and ships reached Britain before Trafalgar?

Britain could exploit much of the industrial cargo, and coal-fired corvettes might even reinforce Nelson at Trafalgar.

The first institutional question is whether Georgian Britain could understand and reproduce the cargo. The country already possessed industrialists, workshops, and scientific talent, so machine tools and components would provide a foundation rather than incomprehensible artefacts. Engineers would study the convoy's equipment and adapt what could be powered and maintained with contemporary resources. Coal-fired Flower-class corvettes would be especially useful because Britain could plausibly fuel them and send them south. If enough ships arrived before Trafalgar, their speed, guns, and communications would give Nelson an extraordinary reinforcement. The counterfactual distinguishes transferable industrial capability from technology that would fail without its supporting system.