CLS4
Porters Lake South Seaplane Base
VFR
42° 48′ 28″ N 71° 41′ 8″ W
/
400 ft
(122 m MSL)
navigation
250°
41° 51′ 40″ N 71° 6′ 28″ W
/
12 ft
(4 m MSL)
navigation
241°
44° 53′ 19″ N 72° 13′ 45″ W
/
930 ft
(283 m MSL)
navigation
268°
42° 34′ 35″ N 71° 34′ 26″ W
/
308 ft
(94 m MSL)
navigation
247°
43° 32′ 43″ N 71° 59′ 45″ W
/
1.460 ft
(445 m MSL)
navigation
256°
navigation
260°
42° 53′ 18″ N 71° 44′ 16″ W
/
300 ft
(91 m MSL)
navigation
250°
navigation
245°
41° 37′ 35″ N 70° 56′ 19″ W
/
123 ft
(37 m MSL)
navigation
238°
42° 27′ 37″ N 71° 31′ 4″ W
/
280 ft
(85 m MSL)
navigation
246°
43° 51′ 35″ N 72° 5′ 45″ W
/
1.196 ft
(365 m MSL)
navigation
259°
42° 25′ 1″ N 71° 29′ 39″ W
/
185 ft
(56 m MSL)
navigation
246°
42° 11′ 24″ N 71° 21′ 22″ W
/
190 ft
(58 m MSL)
navigation
244°
42° 29′ 36″ N 71° 32′ 37″ W
/
265 ft
(81 m MSL)
navigation
247°
41° 49′ 14″ N 71° 6′ 52″ W
/
0 ft
(0 m MSL)
navigation
240°
43° 25′ 12″ N 71° 59′ 55″ W
/
1.288 ft
(393 m MSL)
navigation
255°