Check out the three long-tube, tuned intake runners on the powerhead.
For a precise fuel-air mix, each has its own throttle valve and
fuel injector (not visible). Mounting injectors on the hidden inside
surfaces of the runners saves space and also keeps electricals away
from the cowling.
Greenline Hybrid is a boatbuilder that uses hybrid diesel-electric propulsion systems and solar panels on the hardtop plus smart design to make the efficient use of the energy on the boat. The result in some models: silent operation, full-size residential appliances, and an overall pleasant experience on board.
See for yourself here. ▶