diff --git a/samples/ships.bas b/samples/ships.bas
index c3958b2..11115cd 100644
--- a/samples/ships.bas
+++ b/samples/ships.bas
@@ -5,18 +5,20 @@
 
 100 hgr:vtab 21
 110 wl=40:ws=wl-3:wc=wl+2
-110 hcolor=6:hplot 0,wl to 279,wl
+110 hcolor=6:hplot 0,wl to 279,wl:hplot 0,159 to 279,159
 
 120 hcolor=3
 130 x=140:sd=0:s=sh
 140 di=1:mm=5:dim dx(mm),dy(mm),ds(mm),ox(mm),oy(mm),os(mm)
 150 for i=1 to mm:dx(i)=0:dy(i)=0:ds(i)=0:next i
 160 bs=0:bx=0:by=0:bd=0
+170 xs=0:xx=0:xy=0
 
 200 xdraw s at x,ws:ox=x:os=s
-210 if bx then xdraw bs at bx,by:cx=bx:cs=bs:cx=bx:cy=by
+210 if bx then xdraw bs at bx,by:cs=bs:cx=bx:cy=by
 220 ox(di)=dx(di):oy(di)=dy(di):os(di)=ds(di)
 230 if dx(di) then xdraw ds(di) at dx(di),dy(di)
+240 if xx then xdraw xs at xx,xy:zs=xs:zx=xx:zy=xy
 
 300 ky=peek(-16384):if ky < 128 then 400
 310 poke -16368,0
@@ -32,22 +34,24 @@
 430 goto 500
 450 rr=rnd(1):if rr < 0.10 then 480
 460 if rr > 0.20 then 500
-470 bx=10:by=wl+10+rnd(1)*80:bd=1:bs=sb+1:goto 500
-480 bx=270:by=wl+10*rnd(1)*80:bd=-1:bs=sb
+470 bx=10:by=wl+10+rnd(1)*80:bd=2:bs=sb+1:goto 500
+480 bx=270:by=wl+10+rnd(1)*80:bd=-2:bs=sb
 
 500 x=x+sd
 510 if x < 10 then x=10
 520 if x > 270 then x=270
 
+550 if xs then xs=xs+2:if xs >= sh then xx=0
+
 600 if not dx(di) then 690
 610 ds(di)=ds(di)+1:if ds(di) > dc+3 then ds(di)=dc
-620 dy(di)=dy(di)+3:if dy(di) > 160 then dx(di)=0:dy(di)=0:ds(di)=0
+620 dy(di)=dy(di)+5:if dy(di) > 155 then dx(di)=0:dy(di)=0:ds(di)=0
 690 di=di+1:if di > mm then di = 1
 
-700 if ox(di) then xdraw os(di) at ox(di),oy(di)
-710 if cx then xdraw cs at cx,cy:if peek(234) then print "BOOM!":bx=0:cx=0
-720 xdraw os at ox,ws
-730 goto 200 
+700 if ox(di) then xdraw os(di) at ox(di),oy(di):if peek(234) then dx(di)=0:dy(di)=0:ds(di)=0
+710 if cx then xdraw cs at cx,cy:a=cx:cx=0:if peek(234) then print "BOOM!":xs=cs+2:xx=a:xy=cy:bx=0
+720 if zx then xdraw zs at zx,xy:zx=0
+730 xdraw os at ox,ws
+740 goto 200 
 
-49999 end
 50000 $shape src="ships.st", poke=yes, init=yes, assign=(sb="sub-left", sh="ship-left", dc="depthcharge-1")
diff --git a/samples/ships.st b/samples/ships.st
index 4418829..365681e 100644
--- a/samples/ships.st
+++ b/samples/ships.st
@@ -10,6 +10,72 @@
   xxxxxxx*xxxxxxx
   xx.xxxxxxxxxxx.
 
+.bitmap sub-left-explosion-1
+  ....xxxxx.......
+  .xxxx...xxxxxxxx
+  xx..........x..x
+  x......+.......x
+  xx..........x..x
+  .xxxxxxxxxxxxxxx
+
+.bitmap sub-right-explosion-1
+  .......xxxxx....
+  xxxxxxxx...xxxx.
+  x..x..........xx
+  x.......+......x
+  x..x..........xx
+  xxxxxxxxxxxxxxx.
+
+.bitmap sub-left-explosion-2
+  ....xxx.xxx.......
+  .xx.x.....xxx.xxxx
+  xx...............x
+  x................x
+  ........+.........
+  x................x
+  xx...............x
+  .xxx.xxxxxxxx.xxxx
+
+.bitmap sub-right-explosion-2
+  .......xxx.xxx....
+  xxxx.xxx.....x.xx.
+  x...............xx
+  x................x
+  .........+........
+  x................x
+  x...............xx
+  xxxx.xxxxxxxx.xxx.
+
+.bitmap sub-left-explosion-3
+  .....xx..xx..........
+  ......xxxx......xx...
+  .x............xxx....
+  xx...................
+  .....................
+  ...................xx
+  ..........+........x.
+  ...................xx
+  .....................
+  xx...................
+  .x............xxx....
+  ......xxxx......xx...
+  .....xx..xx..........
+
+.bitmap sub-right-explosion-3
+  ..........xx..xx.....
+  ...xx......xxxx......
+  ....xxx............x.
+  ...................xx
+  .....................
+  xx...................
+  .x........+..........
+  xx...................
+  .....................
+  ...................xx
+  ....xxx............x.
+  ...xx......xxxx......
+  ..........xx..xx.....
+
 .bitmap ship-left
   .....xxxx......
   .....xxxx......