Marine engine

A marine engine comprising:

• a crankcase;
• a cylinder block connected to the crankcase;
• a crankshaft disposed in the crankcase for rotation therewithin;
• an output shaft disposed vertically above the crankshaft, the output shaft being disposed at least partially internal to the engine for rotation therewithin;
• a drive operatively connected to the crankshaft and the output shaft to transmit power from the crankshaft to the output shaft, the drive being disposed internal to the engine;
• and
• a driveshaft coupling disposed on the output shaft for operatively coupling a driveshaft of a propulsion unit.

A boat comprising:

• a hull;
• a deck disposed on the hull, the deck having a deck floor;
• two engines disposed in the hull, each of the engines being disposed on a different side of a longitudinal centerline of the hull, a top of each of the engines being disposed vertically below the deck floor, each of the engines including:
• a crankcase;
• a crankshaft disposed in the crankcase for rotation therewithin;
• an output shaft driven by the crankshaft, the output shaft being disposed vertically above the crankshaft, the output shaft being horizontally offset from the crankshaft towards the longitudinal centerline of the hull;
• a driveshaft coupling disposed on the output shaft;
• a first cylinder bank connected to the crankcase;
• and
• a second cylinder bank connected to the crankcase, the first cylinder bank and the second cylinder bank being disposed at an angle relative to each other;
• a transom extending generally vertically upwardly from a rear portion of the hull;
• and
• two stem drive units connected to the transom, each stem drive unit being operatively connected to a corresponding one of the engines through the transom, a driveshaft of each stern drive unit being operatively coupled to a corresponding one of the driveshaft couplings.