x = 154, y = 26
7boo136boo$5b3obo3boo124boo3bob3o$booboo3booboboo122booboboo3booboo$b
oobbobboboobboo122boobboobobbobboo$obbo6bobobob3o116b3obobobo6bobbo$
10boo3bo122bo3boo$9bo3bobo4bo112bo4bobo3bo$10bo5bobb4o29bo11bo24bo11bo
29b4obbo5bo$17bo4bob3o24bobo4b3obboo24boobb3o4bobo24b3obo4bo$16boobbo
6bo20booboboboo3b3obo24bob3o3booboboboo20bo6bobboo$21boobobo21boobb5o
9boob3o10b3oboo9b5obboo21boboboo$25b3o19bobbo8b3o4boo4boo6boo4boo4b3o
8bobbo19b3o$22bo3bobbo22bob3ob3ob5ob3o3bo4bo3b3ob5ob3ob3obo22bobbo3bo$
20boo7bo25boobobob3o3b3obo3boo3bob3o3b3oboboboo25bo7boo$15boo9bo3bo7b
3o25bobo3bo3boo3bo3bobo25b3o7bo3bo9boo$12booboo12bobbo4bobobooboo22bo
3bo8bo3bo22booboobobo4bobbo12booboo$12boo3bo14bo4bobo4boo9boo15boobobb
oboo15boo9boo4bobo4bo14bo3boo$8b3obbo19boboboobobo3boobb3oboobo16boobb
oo16boboob3obboo3boboboobobo19bobb3o$8boobb3o5b3o3b3obbobbo3bobobobobb
3obob3ob5o3b3o8boo8b3o3b5ob3obob3obbobobobo3bobbobb3o3b3o5b3obboo$8b3o
9b3obbobob8obobbobbobboboboobobboboobo5bo3boo6boo3bo5boboobobboboobobo
bbobbobbob8obobobb3o9b3o$9bo9bo3bobboo3bobb3obobbooboo11bobo3bo4bobo
12bobo4bo3bobo11booboobbob3obbo3boobbo3bo9bo$10bobbo11bo3bo4bo4bobbobo
bboo8bobo3boo6bo10bo6boo3bobo8boobbobobbo4bo4bo3bo11bobbo$9booboo4bo4b
o10bo6bo3bo3b7obobo5bo3bob12obo3bo5bobob7o3bo3bo6bo10bo4bo4booboo$13b
7o13boo14boboo6boboobo24boboobo6boobo14boo13b7o$12bobobo17bo19b3o40b3o
19bo17bobobo$34bo84bo!

This is a period 18 c/3 puffer which produces two boats in each period.
David I. Bell, July 1996