α	critical p value
€	euro
CORREL	correlation test
dB	decibel, sound pressure unit
dB(A)	filter A—to measure on the hearing scale of a human ear
EC	European Community
EU	European Union
HP	hedonic price
IMO	International Maritime Organization
Lp	level of sound pressure
LR	linear regression test
m	meter
n	number
MI	monthly income
p-value	level of statistical significance
r	correlation coefficient in the correlation test
R2	determination coefficient in the linear regression test
SOLAS	Convention for the Safety of Life at Sea
SPL	sound pressure level
WHO	World Health Organization
WTA	willingness to accept
WTP	willingness to pay
y	years