Nearly 90 percent of large vessels traveling in some conservation areas along the East Coast violated mandatory speed limits established to protect endangered North Atlantic right whales, according to a new report. In Cape Cod Bay, 45 percent of more than 650 large vessels violated the speed limits, the report found. In the Great South Channel south of Cape Cod, about 37 percent of nearly 1,300 large vessels allegedly broke the law. The report also found that 85 percent of large vessels failed to reduce their speeds in areas that NOAA designated for voluntary speed limits. They also urged government vessels, which are often exempt from the law, to abide by the speed limits.