What is the policy on yacht charter cancellation due to weather?

Summer: Pacific NW, Canada - West Coast
Winter: Pacific NW, Canada - West Coast

Summer: Galapagos
Winter: Galapagos

Summer: Alaska
Winter: Alaska

Summer: South America, Galapagos
Winter: South America, Galapagos

Summer: South Pacific, French Polynesia
Winter: South America, Caribbean Virgin Islands (US/BVI), Caribbean Leewards, Caribbean Windwards, Mexico, Central America, New Zealand, South Pacific, French Polynesia, Caribbean Virgin Islands (US), Caribbean Virgin Islands (BVI)

Summer: W. Med -Naples/Sicily, Greece, W. Med -Riviera/Cors/Sard.
Winter: Indian Ocean and SE Asia

Summer: New Zealand, South Pacific
Winter: New Zealand

Summer: Indian Ocean and SE Asia
Winter: Indian Ocean and SE Asia

Summer: South America, Galapagos

Summer: Galapagos
Winter: Galapagos

Summer: French Polynesia
Winter: Indian Ocean and SE Asia, South Pacific

Summer: Indian Ocean and SE Asia
Winter: Indian Ocean and SE Asia