If you smell raw diesel in your boat, you have a leak in your fuel system and you must. find the source and repair it. That said, keep in mind that the most common sources of boat odors are the head, sanitation hoses, holding tank and bilge.
A Secure Digital (SD) memory card is a portable flash memory chip used in devices like digital cameras, cellular phones, and audio players. The card is about the size of a postage stamp and comes in various capacities and transfer speeds.
1 Asymmetrical slots in the sides of the SD card prevent inserting it upside down (while an MMC goes in most of the way but makes no contact if inverted).  Most SD cards are 2.1 mm (0.083 inches) thick, compared to 1.4 mm (0.055 inches) for MMCs. The SD specification defines a card called Thin SD with a thickness of 1.4 mm, but they occur only rarely, as the SDA went on to define even smaller form factors.