While I couldn't find a free PDF download of the standard, here are some alternatives:
For manufacturers, IEC 60945 certification is often for any equipment intended for international voyages under SOLAS (Safety of Life at Sea) regulations. Without this testing, shipbuilders and end customers are likely to reject products due to the high risk of failure in maritime environments. IEC 60945 Testing & Certification - TÜV SÜD iec 60945 pdf free download
: Protection against accidental access to dangerous voltages. While I couldn't find a free PDF download