In the pilot boat shot ( P1000353 ) it looks to me that the light sources are in a state of orbs !!! " in the water, at the entrance door and on the ship in the background "
DSCF1377 flame looks like a so called orb or white disc..DSCF1378 flame is more natural
big difference between 1/13 and 1/20 sec. as for the flame aspect.