diff common/player.c common/player.c
--- common/player.c	Sat Dec 30 16:17:06 2000
+++ common/player.c	Sat Jan 13 16:46:47 2001
@@ -176,13 +176,14 @@
     /* Search for units/cities that might be able to see the sub/missile */
     int x, y;
     struct city *pcity;
-    struct unit *punit2;
     for(y=punit->y-1; y<=punit->y+1; ++y) { 
       if(y<0 || y>=map.ysize)
 	continue;
       for(x=punit->x-1; x<=punit->x+1; ++x) { 
-	if((punit2=unit_list_get(&map_get_tile(x, y)->units, 0)) &&
-	   punit2->owner == pplayer->player_no ) return 1;
+        unit_list_iterate(map_get_tile(x, y)->units, punit2) {
+          if (punit2->owner == pplayer->player_no)
+            return 1;
+	} unit_list_iterate_end;
 
 	if((pcity=map_get_city(x, y)) && pcity->owner==pplayer->player_no)
 	  return 1;