The Zodiac Mark II ST 2009 vs Zodiac Yachtline YL480 2001 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
The power gap is worth calling out. Rated to 90 hp, the Zodiac Yachtline YL480 2001 has a 50-hp advantage over the Zodiac Mark II ST 2009's 40-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Zodiac Mark II ST 2009 is rated for 7 passengers, while the Zodiac Yachtline YL480 2001 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Zodiac Mark II ST 2009 could be the deciding factor.
Bottom line: Choose the Zodiac Mark II ST 2009 if your priority is putting more people on the water — it handles 7 passengers and at 13,8 ft it has the deck room to back that rating up comfortably. The Zodiac Yachtline YL480 2001 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.