commercial vessels hold one thing in common. They are maritime businesses.
is a subcategory beneath this major heading, those that include
overnight passage and therefore necessitate being fitted out with
sleeping quarters. These might include freighters, cruise ships
and steamboats among others.
there are those whose function is completed within the space of
a business day. In the literal sense of the term, they might be
thought of as "day trippers". This type might include
casino boats, whalers, ferries, sport fishing craft, launches and
water taxis, patrol boats, pilot boats and tugboats.
type of water craft seeks noise and vibration mitigation in its
design, but to different degrees and for different reasons. For
the sleeping comfort of passengers while a cruise ship is underway,
it is logical that noise and vibration be kept to a minimum in the
Sometimes the noise levels on boats do not violate noise level requirements
set forth in the U.S. Coast Guard's, Navigation and Vessel Inspection
Circular No. 12-82, Recommendations on Control of Excessive Noise";
but, when boats that serve as a work place, crew could benefit from
noise controls to avoid fatigue on the job which could result in
safety advantages. J&A made recommendations to a tug company
making for a quieter work environment both on deck and below deck.
a boat may be of strategic importance for communicating information
vital to the successful navigation through hostel waters or to escape
detection by hostel vessels.
the most comfortable vessel, in terms of sound and vibration mitigation,
is not the only parameter when balancing the sound proofing equation.
Another major factor in determining the proper solution is weight
requirements. A requirement of the fast ferry is to deliver the
passenger from Point A to Point B the quickest way. So, in addition
to comfort and safety, the boat owner is seeking solutions that
are light weight with minimal impact on forward progress in the
the owner of a commercial vessel one further factor in this equation
is profitability. A noisy, shaky ride will motivate passengers to
seek transportation elsewhere. A noise and vibration solution giving
maximum comfort to the passenger but costing more than the market
will bear is no solution. Getting from Point A to Point B the fastest,
most comfortable way for the lowest fare is the best solution for
both the passenger and, therefore, the owner. The boat has to accomplish
its business purpose, which will include noise and vibration mitigation
as stated in all the examples given above, with as little impact
on its profit margin as possible.
safety is also part of the package when applying sound proofing
onboard any boat, and J&A can achieve both fire safety and noise
control with the same material application. Joe Smullin, president
of J&A Enterprises, has attested to the fact that, "J&A
has designed innovative, fire rated insulation systems, meeting
the latest MCA requirements calling for "steel equivalent"
or greater protection of structural elements. Our ground breaking
design has been executed while, at the same time, maintaining the
high degree of excellence of noise and vibration requirements for
which we are noted".