An apparatus for providing marine information comprising: a user interface ; a processor ; and a memory including computer program code, the memory and the computer program code configured to, with the processor, cause the apparatus to: generate a sonar image based on sonar return data received at a geographic location from an underwater environment relative to a vessel , wherein the sonar image is associated with a scale value; determine the geographic location associated with the sonar return data based on location data received from one or more position sensors at an instance in which the sonar return data was received by one or more transducers associated with the vessel; present a nautical chart on a display; receive a user input via the user interface within a portion of the display in which the nautical chart is presented, such that the user input corresponds to the geographic location within the nautical chart, wherein the user input indicates a desire to increase a zoom level of the nautical chart to or past the scale value; and cause, in response to at least one of receiving the user input or changing the zoom level of the nautical chart to or past the scale value, presentation of the sonar image in relative position on the display with respect to the nautical chart, wherein the relative position corresponds to the geographic location within the nautical chart. a user interface ; a processor ; and a memory including computer program code, the memory and the computer program code configured to, with the processor, cause the apparatus to: generate a sonar image based on sonar return data received at a geographic location from an underwater environment relative to a vessel , wherein the sonar image is associated with a scale value; determine the geographic location associated with the sonar return data based on location data received from one or more position sensors at an instance in which the sonar return data was received by one or more transducers associated with the vessel; present a nautical chart on a display; receive a user input via the user interface within a portion of the display in which the nautical chart is presented, such that the user input corresponds to the geographic location within the nautical chart, wherein the user input indicates a desire to increase a zoom level of the nautical chart to or past the scale value; and cause, in response to at least one of receiving the user input or changing the zoom level of the nautical chart to or past the scale value, presentation of the sonar image in relative position on the display with respect to the nautical chart, wherein the relative position corresponds to the geographic location within the nautical chart. generate a sonar image based on sonar return data received at a geographic location from an underwater environment relative to a vessel , wherein the sonar image is associated with a scale value; determine the geographic location associated with the sonar return data based on location data received from one or more position sensors at an instance in which the sonar return data was received by one or more transducers associated with the vessel; present a nautical chart on a display; receive a user input via the user interface within a portion of the display in which the nautical chart is presented, such that the user input corresponds to the geographic location within the nautical chart, wherein the user input indicates a desire to increase a zoom level of the nautical chart to or past the scale value; and cause, in response to at least one of receiving the user input or changing the zoom level of the nautical chart to or past the scale value, presentation of the sonar image in relative position on the display with respect to the nautical chart, wherein the relative position corresponds to the geographic location within the nautical chart. <EOS>