erice 732 Posted July 22, 2019 Share Posted July 22, 2019 Researchers tracking the animals suggest they are migrating to the Hauraki gulf via the Taranaki bite, with sightings between July and August. https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=12251681 common? hauraki gulf bryder's whale, Bryde's whales display seemingly erratic behaviour compared to other baleens, because they surface at irregular intervals and can change directions for unknown reasons.[6] Quote Link to post Share on other sites
darkside 61 Posted July 23, 2019 Share Posted July 23, 2019 Saw four whales in the past couple of days close inside Great Barrier. Just assumed they were Bryde's and didn't pay much attention. I did think having three in sight at one time was a little unusual. Quote Link to post Share on other sites
erice 732 Posted July 23, 2019 Author Share Posted July 23, 2019 a couple of years back returning from barrier at 10knots? on an 8.5 cat we saw some spume in the distance and sailed over and parallel to a couple of bryder's? whales then a 3rd rose right across our bows, fortunately far enough away that we were able to turn away in time their numbers are on the rise and as the article above notes the bryder's seem to be less predictable to sail around Quote Link to post Share on other sites
Freedom GBE 27 Posted July 23, 2019 Share Posted July 23, 2019 Cant wait to get out there on the SSANZ 100 miler. What are the rules if we see whales ahead? We just dip I suppose, by how far? We can lift the boards up. Dolphins etc see us coming but these whales are unlikely to see us right? 100 boats might scare them away which will be ashame. I also hope all ships are looking out for them. I think they have to slow down in the Hauraki Gulf. 1 Quote Link to post Share on other sites
harrytom 642 Posted July 23, 2019 Share Posted July 23, 2019 Passage planning - Vessels are encouraged to use recommended shipping routes to enter and depart the port. Narrowing the area of the Gulf transited by ships reduces the risk of encountering a whale. By travelling at a maximum speed of 10 knots whilst in the Gulf, risks associated with an accidental impact are significantly reduced. There is good scientific evidence to suggest that if a whale is hit when the vessel is travelling at 20 knots, the chance of survival is less than 10 per cent, whereas if the vessel slows down to 10 knots, the chances of a whale surviving an impact rises to 75 per cent. The most effective means of reducing the risk to whales was identified as being reducing the speed of vessels transiting the Gulf to 10 knots or less. A collaborative process involving the Ports of Auckland, the shipping industry, the Department of Conservation, the University of Auckland, the Environmental Defence Society, council representatives and others was commenced in March 2012 to find ways to address the issue. The process was successful, just 18 months later, in developing a voluntary protocol aimed at reducing the number and impact of collisions between Bryde’s whales and large vessels in the Hauraki Gulf. http://www.environmentguide.org.nz/issues/marine/vessels/case-study-brydes-whale-voluntary-protocol/ Quote Link to post Share on other sites
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