Getting a 150' Motor Yacht in Shipshape

We recently worked on 150' Azimut that has twin MTU 16V2000 M86 engines and ZF 3360 reduction gears, but like any vessel, it needed some attention to keep things running right. Here’s the lowdown from the specialists who have seen it all in 30+ years of wrench turning and alignment tweaking.

We started with a vibration analysis using cutting edge technology like the Pruftechnik VibXpert II. Vibration data from the engine mounts, reduction gears, and hull showed that, while within comfort tolerances, the port shaft was acting up—with leaks at higher RPMs and noticeable vibration spikes. Honestly, a leaky seal and carbon dust on the starboard side don’t lie, those shaft seals need love.

Next up, a laser hull deflection measurement. A vessel’s hull changes shape between the water and a dry dock, and if that’s not managed right, you’ll get alignment headaches down the line. Using a Levalign system, we charted the hull’s profile afloat and on the blocks. Sure enough, adjustments were needed to get the blocking spot on.

Lastly, we performed an optical alignment evaluation. Using a Brunson alignment scope, we checked the propulsion setup from the reduction gears to the stern tubes. We found angular misalignments and some bearings out of tolerance. Fixing that ensures the propulsion lines run true.

Vibration fixes, proper blocking, and tight alignment make all the difference. This yacht’s back up to spec and ready for smooth cruising. For anyone in the industry, you know the devil’s in the details, and this one came out right. Until the next job!