diff -r 4bc5c9811562 -r 94cc8a25185f src/ship_cmd.cpp
--- a/src/ship_cmd.cpp	Wed Jan 23 17:08:35 2008 +0000
+++ b/src/ship_cmd.cpp	Wed Jan 23 17:30:28 2008 +0000
@@ -479,7 +479,7 @@
 		pfs.best_bird_dist = (uint)-1;
 		pfs.best_length = (uint)-1;
 
-		FollowTrack(tile, 0x3800 | TRANSPORT_WATER, 0, (DiagDirection)_ship_search_directions[i][dir], (TPFEnumProc*)ShipTrackFollower, NULL, &pfs);
+		FollowTrack(tile, 0x1800 | TRANSPORT_WATER, 0, (DiagDirection)_ship_search_directions[i][dir], (TPFEnumProc*)ShipTrackFollower, NULL, &pfs);
 
 		if (best_track != INVALID_TRACK) {
 			if (pfs.best_bird_dist != 0) {