Jon Diesel MarineMarine diesel and engine surveys(941) 780-1330
Twin marine diesel engines in a clean engine bay

Past work

No job too big or small

Photographs from real jobs and real survey findings. Every image on this page came off a boat I worked on.

Survey findings

Findings as they appear in a report

Survey finding photograph marked S1 showing damaged starboard turbocharger blades with green callout arrows
S1 / Turbocharger

Starboard turbo blades damaged

Compressor wheel damage found on inspection. This is the kind of finding that changes a purchase price, and it is not visible from the dock or in a general hull survey.

Survey finding photograph marked G2 showing a badly rusting generator exhaust elbow with blue callout arrows
G2 / Exhaust

Generator exhaust elbow badly rusting

Internal corrosion on a generator exhaust elbow. Left alone, a perforated elbow admits sea water into the unit, which is a far larger bill than the part.

Survey finding photograph with a red callout arrow marking a badly leaking port engine oil cooler
P1 / Oil cooler

Port engine oil cooler leaking

A leaking oil cooler lets coolant or raw water reach the oil, which damages bearings. Caught on survey, it is a repair. Caught later, it is an engine.

Survey finding photograph marked S2 with a green callout arrow pointing to a hose clamp on a cooling hose
S2 / Cooling

Hose clamp condition noted

Small items get photographed and coded too. A clamp is a few dollars, and a hose that lets go below the waterline is not a few dollars.

Engine rooms, boatyards and docks

Wide view of a yacht engine room with twin marine diesel enginesTwin marine diesel engines in a clean engine bay after serviceMarine generator installed in a yacht engine roomEngine cooling system being flushed with coolant containers connectedHeat exchanger tube bundle showing heavy salt scale foulingSectioned marine exhaust component showing severe internal corrosionRusted marine exhaust elbow removed from an engine for replacementView down a marine exhaust bore showing carbon buildupMarine exhaust section removed and laid out for inspectionMarine cooling component during cleaning to clear internal foulingFuel filter and water separator assembly in a marine engine bayMarine diesel engine detail showing hoses, fittings and sensorsClose view of salt corrosion on a marine turbocharger housingMarine mechanic working on a diesel engine inside an engine bayBoats hauled out at an island boatyard during a travel service jobSportfishing yacht hauled out on stands at a boatyardBoat alongside a dock during a mobile marine service visitMotor yacht moored at a dock awaiting engine serviceMotor yacht lit at a dock at night with underwater lights onFamily enjoying clear water aboard their boat

Tell me what the engine is doing

Describe the symptom on the phone and most of the time the problem is narrowed before I arrive. Surveys are booked around your sea trial date.