Contact Hours (CH) / Professional Development Hours (PDH)

Education hours toward certification renewal are tracked by Contact Hours (CH) and Professional Development Hours (PDH). One (1) hour (60 minutes) is equal to one (1) CH / PDH. 
 Certified Marina Manager/Certified Marina Operator Contact Hours (CH) - IMBC offers the best opportunity to earn contact hours (CH) towards recertification. Contact hours are given for educational seminars, workshops and tours. They are not given for meetings, exhibition viewing, or networking receptions. Check your final conference program onsite for the number of hours given for each event. For more information on AMI certifications, visit

Professional Development Hours (PDH) will also be available for IMBC's educational sessions. Check with your certifcation provider for approval. Engineers are instructed to check with their state's requirements for recertification.