Fueling. How do you know when to shut off? 1. Know how many gallons you need to fill to your desired level. If you don't know this then you need to change your operating procedures. Your log book should be giving you all the info you need to fuel up accurately. This is one of the minor benefits of trawlering as opposed to simply turning fuel into noise. 2. Tell the fuel jockey to cut off the fuel flow at xxx liters or gallons or whatever the meter shows. 3. Try to have a line of sight to the meter. 4. Use the meter to bring you to some safe (whatever you are comfortable with) approximation of your target fuel-up value. 5. Use your dipstick to confirm the level and refine your fuel consumption calc. 6. Put the lid back on. 7. Hand the hose back. 8. Say thank you and pay the man. On a typical trawler, do not assume that if a given fuel flow worked last time, it will work this time. The vents are so small and they are an invitation to bugs to camp/die in to the detriment of fuel intake flow rate. Richard