Are there any regulatory requirements or guidelines related to parallel indexing performance in ECDIS?

While there aren't specific, explicit regulations mandating parallel indexing, performance requirements are implicitly addressed in IMO performance standards (e.g., MSC.237(82)). These standards require ECDIS to function reliably and provide timely information, which necessitates adequate performance, often achieved through techniques like parallel indexing. Manufacturers must demonstrate compliance with these standards through testing and certification.