Operating in two cruising modes, the Greenline 39 Hybrid can run under its 220-hp Volvo diesel at an 11-knot cruising speed, topping out at 18 knots, or under its electric power at 4 knots, topping out at 6.5 knots. Under diesel power, range is 1,000 nm at 7 knots; under electric power, however, range is only 20 knots. What this means is that under its green, electric, low-carbon footprint, the Greenline 39 Harbor can cruise around a harbor or two, or enter a quiet anchorage at night, silently and efficiently. Either way, the Greenline 39 is a low-profile, light-filled, two-stateroom,…