Fix RCT1 Splash Boats import

src/openrct2/rct1.h

@@ -1167,6 +1167,8 @@ enum {
 	REVERSER_RC_BOGIE = 80,
 	MINIGOLF_PLAYER = 81,
 	MINIGOLF_BALL = 82,
+	SPLASH_BOAT = 83,
+	SPLASH_BOAT_INVISIBLE = 84,
 	HYPERCOASTER_FRONT = 96,
 	HYPERCOASTER_CARRIAGE = 97,
 	INVERTED_4_ACROSS_CARRIAGE = 98,

src/openrct2/rct1/tables.cpp

@@ -512,8 +512,8 @@ namespace RCT1
             2, // REVERSER_RC_BOGIE
             1, // MINIGOLF_PLAYER
             0, // MINIGOLF_BALL
-            0,
-            0,
+            0, // SPLASH_BOAT
+            1, // SPLASH_BOAT_INVISIBLE
             0,
             0,
             0,