Scania, the large Swedish manufacturer of engines for boats, trucks and industrial applications,  just announced that it’s entering the North American pleasure boat market with two large 900- and 1,150-hp diesel engines. Both are fully emissions certified for the U.S. market, and both are designed for cruising and sport fishing boats. The powerful and lightweight engines have leading power-to-weight ratios, according to the company. The 900-hp engine is a six-cylinder, 13-liter in-line version, and the 1,150-hp engine is a 16-liter V-8 (see picture at top). Both are built on a compacted graphite iron block and use a simple wastegate turbocharger.…