[MARMAM] New paper on ship strikes between sailing vessels & cetaceans worldwide
Fabian Ritter, MEER e.V.
ritter at m-e-e-r.de
Sat Jul 21 04:09:42 PDT 2012
Dear fellow Marmamers,
we are pleased to announce the publication of the following paper in the
latest volume of the Journal of Cetacean Research and Management:
Ritter, F. (2012). Collisions of sailing vessels with cetaceans
worldwide: First insights into a seemingly growing problem.
Journal of Cetacean Research and Management, 12(1): 119-127.
Vessel-whale collisions are of growing concern worldwide, but
information about collisions involving sailing vessels is especially
scarce. This study represents the first global quantification of this
kind. A total of 111 collisions and 57 near misses were identified,
spanning from 1966 until 2010; 75% of cases was reported for the period
from 2002–2010, suggesting an increasing trend. Reported collisions and
near misses occurred on all oceans, often during ocean races and
regattas, and were most frequent in the North Atlantic. Vessel type and
speed as well as circumstances of the incident varied widely, but most
often monohulls were involved, predominantly sailing at speeds between 5
and 10 knots. Most reports referred to ‘large whales’ as opposed to
‘small whales’ or ‘dolphins’. The species could be identified in 54
cases. Most recognised animals were humpback or sperm whales. Injuries
to the whales varied strongly from ‘not visible’ to ‘dead after
collision’, but mostly could not be determined. Sailing crew members
were hurt in several cases, including collisions occurring at low
speeds, and collisions often damaged vessels, including major impairment
and seven cases of vessel loss. The findings presented here suggest that
elevated vessel speed contributes to a higher risk of collisions.
Conversely, the outcome of a collision (e.g. injury to whale or crew,
damage to vessel) appears not to be a direct function of vessel speed.
Several measures are discussed which potentially can contribute to
mitigating the problem, including placing watchposts, an open dialogue
with regatta organisers, changes in the design of regattas and ocean
races and public outreach initiatives.
Please let us know if you are interested in receiving a pdf copy by
sending an email to: info at m-e-e-r.de
T/F: (0)30-644 97 230
e-Mail: info at m-e-e-r.de
The dolphins were having a great relaxed time
and there were no major answers they wished
to know the questions to...
(After Douglas Adams)
M.E.E.R. is a registered charity.
(German tax ID): 27/672/54225
More information about the MARMAM