a plurality of anchor plates arranged in a longitudinal direction, each of {HEAD ~ said anchor plates} being secured to the bottom of {TAIL ~ a tank}; and 
a plurality of anchor plates arranged in a longitudinal direction , each of { HEAD ~ said anchor plates } being secured to the bottom of { TAIL ~ a tank } ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH