Premium Marine Engine Survey

M/V BAD HABIT

1978 46FT Bertram • Twin Detroit Diesel 8V71TA Marine Engines

Detroit Diesel 8V71TA
Allison 1RM310-PL
Northern Lights Generator
Oil Analysis

Conducted by:
Jeff Lendall & Sons – 805 Marine Diesel Mechanic

HIN/IMO: 116E595
OFFICIAL#: 949819
LOA: 46.5FT
YEAR: 1978

This Detroit Diesel 8V71TA marine engine survey documents propulsion-system condition, drivetrain performance, cooling-system diagnostics, oil leak findings, transmission evaluation, sea-trial observations, and oil-analysis recommendations aboard M/V Bad Habit.

ENGINE 1

Engine Make: Detroit Diesel
Engine Model: 8V-71TA
Engine Type: Inboard
Power HP: 462
Fuel Type: Diesel
Hours: 1906
Serial Number: 8VA365969
Location: Port

Transmission: Allison 1RM310-PL

ENGINE 2

Engine Make: Detroit Diesel
Engine Model: 8V-71TA
Engine Type: Inboard
Power HP: 462
Fuel Type: Diesel
Hours: 1822
Serial Number: 8VA370182
Location: Starboard

Transmission: Allison 1RM310-PL

GENERATOR

Generator Make: Northern Lights
Generator Model: M773LW2.3
Generator Hours: 4427
Generator KW: 9.0
Serial #: 7732-40334C

Engine Room Systems Inspection

Fuel Filtration System: Racor Twin Turbine Series fuel filter/water separators appeared serviceable. No water present. Electric priming pump and vacuum gauges installed.

Throttle & Shifter Controls: Morse cable shifters operated properly at flybridge and main cabin locations.

Seawater Pump: Adequate pressure with no seal leakage observed.

Plate-Type Heat Exchanger: Inlet and outlet temperatures within operating parameters.

Engine Oil Cooler: Temperatures within normal operating range.

Fuel Cooler: Checked inlet and outlet temperatures within acceptable range.

Coolant Level Sensor: Functioning properly with no leaks observed.

Engine Mounts and Beds: Heavy longitudinal stringers inboard and outboard. Mount condition satisfactory.

Lube Oil Pressure: 51 PSI port engine and 50 PSI starboard engine at WOT.

Cooling System: Freshwater reservoir type cooling with seawater cooled wet exhaust operated satisfactorily.

Seawater Strainers: 3-inch Groco bronze alloy strainers with sight glass appeared well maintained.

Coolant Levels: Pressurized expansion tanks tested to 25 PSI with no noticeable pressure drop.

Hoses and Clamps: Double clamped where sighted using quality stainless hose clamps.

Belts and Pulleys: Condition appeared serviceable.

Seacocks and Strainers: Ball valve type operated smoothly and satisfactorily.

Exhaust System: Seawater cooled with risers and flexible coupling sections double clamped.

Engine Alarms: Low oil pressure and coolant overheat alarms audible at helm station.

Engine Shutdown: Electronic shutoff solenoids operated satisfactorily.

Stuffing Boxes: Packing gland style leaking at correct rate.

Emergency Shutdowns: Port and starboard emergency shutdown Morse cables and actuators require replacement/service.

Engine Alignment: Smooth operation with no abnormal vibration.

Rudders: Packing gland style appeared serviceable with no vibration.

Turbochargers: Turbochargers appeared to spool properly around 1200 RPM.

Allison Transmissions: Both shifted properly underway, however port transmission leaking excessively at engine pump.

SEATRIAL REPORT

Inspection Item	Observation
Engine Start	Both engines started without excessive cranking.
Exhaust Appearance	Very minimal smoke for engines of this age.
Cooling Water Exhaust	Adequate and normal.
Instrumentation	Engine instruments operated within normal limits at idle, cruise, and WOT.
Steering	Responsive and smooth.
Throttle Operation	Needs adjustment for WOT synchronization.
Transmission Operation	Both transmissions shifted smoothly with no excessive noise.
Backdown Test	Satisfactory.
Rudder Linkage	Both rudder linkages operated smoothly with no leaks.
Oil Leaks	Oil leaks detected at port transmission, starboard governor, and valve covers.

WOT TEST

Wide Open Throttle Test:

Starboard engine produced minor smoke at WOT, however smoke cleared immediately upon throttle reduction. No overheating observed and both engines transitioned smoothly through RPM range.

Master Marine Diesel Troubleshooting Guide

OIL ANALYSIS REPORTS

MARINE ENGINE SURVEY SUMMARY

As a result of my investigation, MARINE ENGINE SURVEY, and by virtue of my experience, my opinion is OVERALL ENGINE RATING: GOOD. The engine room and propulsion systems appear to be well maintained overall with noted repair recommendations.