Council Regulation (EC) No 671/2003 establishes, for fishing vessels greater than 10 metres in overall length and operating in certain waters, a fishing effort limitation scheme and additional conditions for monitoring, inspection and surveillance in the context of recovery of certain cod stocks. Masters or other persons in charge of Irish sea-fishing boats in question and operating in any of the specified areas will be restricted if deploying any of six specified types of fishing gears to carrying on board no more than one of the specified types of fishing gears. They will be required to give advance notice of landings to Sea Fisheries Officers, and must obtain the prior approval of the relevant Sea Fisheries Officer to land cod in excess of 1 tonne into ports or landing places. Quantities of cod in excess of 2 tonnes may only be landed into designated ports. The Order also sets out the maximum number of days in a calendar month on which a sea-fishing boat is permitted to be absent from a port depending on the type of specified fishing gears being used. It also sets out rules regarding the use of more than one type of specified fishing gears during a period.