Maritime patrol aircraft and heavy bombers: the anti-ship overlap

Where is the crossover between a long-range maritime patrol aircraft and a heavy bomber carrying precision weapons?

They overlap in stand-off anti-ship attack, but penetrating contested airspace with a heavy strike load remains a bomber mission.

Anti-ship missions with stand-off missiles are the main area where a long-range maritime patrol aircraft can resemble a bomber. The distinction reappears when the mission requires a substantial bomb load or penetration of defended airspace. An aircraft such as the P-8 is suited to comparatively uncontested airspace. Sending it within enemy fighter range exposes it to being shot down unless fighters provide an escort. Range alone therefore does not determine which aircraft can perform a strike mission.