Canadian Hydrographic Service Central and Arctic Region CA573283 - Approaches to Parry Sound CAUTION CABLES NAVIGATION SAFETY CALL CAUTION Due to the density of small islets and the scale limitations of this ENC, a selection of small islets has been performed in congested areas. CABLES For the mariners safety, all submarine and overhead cables are assumed to conduct electric power at high voltages and contact with or proximity to these poses an extreme danger. Mariners are advised to exercise caution when passing under all overhead cables and to avoid anchoring or conducting seabed operations in the vicinity of submarine cables. However if anchors become hooked onto a cable care must be taken not to sever the cable. Cables installed since the date of publication of this cell may not be charted. Sufficient clearance must be allowed under all overhead cables. Actual clearances may differ from charted values due to changes in atmospheric conditions, ice buildup and/or water levels. For additional information, consult Notice to Mariners No. 16 of each year and the appropriate volume of CHS Sailing Directions. NAVIGATION SAFETY CALL Before leaving Parry Sound Harbour or when passing Red Rock inbound, vessels should broadcast their position and intentions on VHF Channel 16 (156.8 MHz).