Greenheart
Well-Known Member
Even though the rights/wrongs and oblivious selfishness, indifference and inconsistency of crews, charterers and harbour officials is the main issue, I remain fascinated by the reasons behind the inadequacies of engine/exhaust silencing.
Is it a problem that only money and space (for insulation) can answer? I was researching the quietest petrol/diesel generators last night; most manufacturers only advertise their machines' audibility at 7 meters distance, running at 1/4 load! Scarcely relevant.
Have the designers really done all they can, to muffle vibration with elastic mounts and foam-lined boxes that absorb sound? In an ideal world, is there just this simple one-stop solution - big, vented, thick foam-lined cells over the machinery, and underwater exhausts?
Is the real problem not that quiet auxilliaries/generators are an impossible holy grail, but that most builders and boat-owners cut corners and costs in supplying and equipping their boats, and in consequence, we all live with an inevitable harbour-bound raucous drone?
Ironic, that the most expensive equipment seems to be the kind that bothers other people least...
...there ought to be a tax on irritants! 75% added to the cost of anything that emits over 75db, at 1/2 load...
...then see how designers'/manufacturers' priorities change.
Is it a problem that only money and space (for insulation) can answer? I was researching the quietest petrol/diesel generators last night; most manufacturers only advertise their machines' audibility at 7 meters distance, running at 1/4 load! Scarcely relevant.
Have the designers really done all they can, to muffle vibration with elastic mounts and foam-lined boxes that absorb sound? In an ideal world, is there just this simple one-stop solution - big, vented, thick foam-lined cells over the machinery, and underwater exhausts?
Is the real problem not that quiet auxilliaries/generators are an impossible holy grail, but that most builders and boat-owners cut corners and costs in supplying and equipping their boats, and in consequence, we all live with an inevitable harbour-bound raucous drone?
Ironic, that the most expensive equipment seems to be the kind that bothers other people least...
...there ought to be a tax on irritants! 75% added to the cost of anything that emits over 75db, at 1/2 load...
...then see how designers'/manufacturers' priorities change.