After a couple of weeks of measuring, maths, welding and painting we hung the new diesel tanks in the crane and held our breath.
They fitted through the deck opening, swung in under the engine room deck and slid into place on their supports. Within half an hour we were done; the pay-off for good planning.
Not done yet, though. Through deck fittings, venting and other pipework to get in before we can hoist the new Deutz through the same hole.