Number of Exhaust Stacks on Diesel Powered Vessels

[maripaul]

A dumb question from an old Deck Sailor.  Why all of the exhaust pipes sticking out of the stacks on so many of the heavy diesel powered vessels today? Is one pipe for each cylinder? different engines?

Thank you in advance for any comments to straighten me out.

[IACSman]

Hi.
Example: One vessel with two main engines: 2 stacks. 4 aux.engines: 4 stacks. 2 oil-fired aux.boilers: 2 stacks. Vent pipes for safety valves same boilers plus exhaust gas economizer: 3 stacks. 1 incinerator: 1 stack. 3 expansion tanks placed in funnel structure:1 common stack for all tre tanks. In total: 13 stacks.

Just one example. It can of course be limitless configurations.
Emergency generator and disel driven emergency fire pump usually does not have stacks in funnel structure.

Ex. chief engineer.

[maripaul]

Thank you very much.

Very best regards,

maripaul