The synthesis doesn't seem to work well with this particular helix! There seem to be several places where the construction is damaged by previously built ships. Maybe I'm just to dumb, but it seems that at least the 2-*WSS fleet shown above cannot be built one by one, but mustbe built simultaneously.
x = 35, y = 235, rule = B3/S23
17$14b3o$13bo2bo$16bo$16bo$13bobo7$14bo$13b3o$12b2obo$12b3o$12b3o$12b
3o$13b2o16$14b3o$14bo2bo$14bo$14bo$15bobo7$14bo$13b3o$13bob2o$14b3o$
14b3o$14b3o$14b2o16$14b3o$13bo2bo$16bo$16bo$13bobo7$14bo$13b3o$12b2obo
$12b3o$12b3o$12b3o$13b2o16$14b3o$14bo2bo$14bo$14bo$15bobo7$14bo$13b3o$
13bob2o$14b3o$14b3o$14b3o$14b2o16$14b3o$13bo2bo$16bo$16bo$13bobo7$14bo
$13b3o$12b2obo$12b3o$12b3o$12b3o$13b2o16$14b3o$14bo2bo$14bo$14bo$15bob
o7$14bo$13b3o$13bob2o$14b3o$14b3o$14b3o$14b2o16$14b3o$13bo2bo$16bo$16b
o$13bobo!
I wanted to attach the preliminary result for your further inspection. Frontmod.rle is the modified front part. But it does not allow to upload rle-files directly. Do I need to zip it first?