A pre-arrival test is being performed with the engine on bridge control. The vessel has a slow speed engine with mechanical starting air system (not electronic). After a stop order, the engine fails to restart in the next ahead direction order. What would be your immediate actions to restart the engine, if the order was still ahead?
• Slow-speed reversing engine with mechanical starting air controls (camshaft positions for ahead/astern) • Difference between loss of starting air pressure vs engine not in correct direction/position • Immediate actions during pre-arrival tests when the telegraph order is still ahead and you need a prompt restart
• What conditions must be satisfied on a mechanically controlled slow-speed engine before it will admit starting air for an ahead start? • If the engine just successfully stopped from ahead, what simple change might you try with the direction gear and control mode to free up the mechanical starting system before going into full troubleshooting? • Which option focuses on an immediate, practical action to try to get power back quickly, rather than going straight into prolonged troubleshooting or long-term alternatives like anchoring?
• Verify how a mechanical starting air distributor is driven and how its position relates to the ahead/astern cam setting. • Check which choice actually attempts to re-establish a valid start condition (direction, control mode, and starting sequence) before diving deep into diagnosis. • Make sure the option you select includes prompt communication with the bridge AND a realistic way to attempt a quick restart consistent with mechanical slow-speed engine practice.
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