Required tug power and number of tugs needed in variable conditions of wind, current and waves isin most cases an assessment made by pilots based on their professional experience. However, assessments will raise questions by lawyers if something goes wrong. They will use tools to calculate what really is needed with respect to tug power and number of tugs. They have furthermore the advantage of time.
U.S. Coastgard has published an update of their Recommendation for Pilot Transfer Arrangements in latest Marine Safety Information Bulletins (MSIB).
"Recent deaths of maritime pilots while embarking commercial vessels highlight the risks of operating in an
unforgiving maritime environment. To ensure the safety of all personnel boarding a vessel at sea, the Coast
Guard reminds vessel owners and operators of the requirements contained in the Safety of Life at Sea (SOLAS) Chapter V, Regulation 23 and strongly recommends that owners and operators follow the recommendations within IMO Resolution A.1045(27) – Pilot Transfer Arrangements. "
