Md. Code, Natural Resources § 8–738.2

(a) A person may not:

(1) Operate a vessel recklessly or in a manner that may endanger another or the property of another on a bay, creek, lake, river, or stream in the State; or

(2) Come into a wharf or bathing shore recklessly or in a manner that may endanger a person or property.

(b) A person who violates this section is guilty of a misdemeanor and on conviction is subject to:

(1) For a first conviction, imprisonment not exceeding 30 days or a fine of not less than $25 and not exceeding $200 or both; and

(2) For a second or subsequent conviction, imprisonment not exceeding 60 days or a fine not exceeding $500 or both.