At a high level, the crank bearings will be similar to a car engine, the main difference being the fact that an outboard is sat on it's end, which means stuff like lubrication is different. (for a 4- stroke).
Other main differences are outoboards only have one gear ratio and no clutch, so they spend a lot of time at High RPM, which is something most cars don't. (no clutch because the propeller - water interface acts like a torque converter in an Auto car) . Cooling is the last main differnece, as an outboard doen't need a radiator as it just pumps sea water round the head & squirts it out the exhaust.
As Nos says, the details are down the the make & model of the engine, just like any car.