Dataset contains bottom temperature data from trawlers in the Gulf of Maine and the South New England Bight. These are ~one mile binned-averaged hourly ocean bottom temperatures obtained with thermistors attached to commercial fishing trawls. The Vemco Minilog instrument used in most cases is accurate to 0.2 degC. Since this is not reporting fast enough (90 seconds) to resolve the vertical structure, only the bottom values are reported here. The water depths range from 7- 456 meters. The variability associated with tidal, wind, seasonal, and inter-annual processes can be depicted at nearly all sites in this multi-year time series. This data was collected as part of the Environmental Monitors on Lobster Traps (eMOLT) project - a non-profit collaboration of industry, science and academics devoted to the monitoring of the physical environment of the Gulf of Maine and the Southern New England Shelf.