Sloop diplomacy: a small ship backed by a much larger fleet

In the imperial-era analogy, a Royal Navy sloop arrives where other navies have sent their largest and best ships to face one another. Its message is that Britain is watching without joining their fight or committing its main fleet. Other powers could sink the sloop locally, but would then face the much stronger fleet behind it. Deterrence therefore depends on the expected response to an attack, despite the small ship's vulnerability. Its presence also makes accusations of intimidation harder to sustain than the arrival of a carrier battle group would. The same logic gives a modern patrol frigate's limited size a diplomatic purpose. The example identifies no particular historical engagement.