25.5-meter ECO Tender Launches At Perini Navi Perini Navi recently launched the new 25.5-meter ECO tender. This is the yacht that is envisioned to be a large chase tender to the new Perini Navi 42.2-meter E-volution sloop. However, this first unit is going to provide role to an owner who has a 52-meter Perini Navi sailing vessel. The ECO tender is called that name because she is as efficient and environmentally friendly as it goes without going all electric. The vessel does carry a diesel-electric setup. Hamilton waterjets are linked to two 1,627 horse power engines which should allow this craft to see a 30-knot top end.