In Force 9 sea state, the anchor lashings on the port anchor are reported as showing signs of strain. What action do you take as Chief Mate?

A. ANCHOR SECURING IN HEAVY WEATHER — CM ACTION: (1) ASSESS RISK: the anchor is a heavy item (typically 5-15 tonnes) secured in the hawse pipe. If the anchor works loose, it can: (a) Puncture the vessel's shell plating while swinging in the hawse; (b) Fall from the hawse and damage the vessel's propeller or rudder; (c) Become loose cargo presenting a deck hazard. The risk is serious; (2) DO NOT SEND CREW TO FORWARD DECK IN FORCE 9: this is a life-safety decision. In Force 9 seas, green water on the foredeck can sweep a crew member overboard. No anchor lashing is worth a crew member's life; (3) REDUCE SPEED AND ALTER COURSE: immediately reduce speed and alter to a heading that minimises water on the foredeck. A quartering sea (sea on the quarter) typically produces less green water forward than head seas; (4) MONITOR REMOTELY: if possible, observe the anchor from a safe position (bridge wing, forward camera if fitted) to assess the severity; (5) WAIT FOR IMPROVEMENT: if sea state will moderate within 4-6 hours — wait and deploy the repair team in improved conditions; (6) IF IMMEDIATE ACTION IS NECESSARY: if the anchor is clearly about to fall — brief the team thoroughly on safety precautions; use lifelines and harnesses; ensure rescue standby is in place; do the minimum necessary and retreat immediately. Have lookout for approaching waves; (7) LOG: document the observation, decision rationale, and any actions taken; (8) NOTIFY MASTER.

B. Send the bosun and two ABs forward immediately to retighten the anchor lashings. Anchor security is critical and takes priority over weather conditions.

C. Veer the anchor out to two shackles — this gives more chain to absorb motion. The slack chain will reduce the stress on the lashing.

D. Drop the anchor overboard immediately to prevent it causing hull damage. The loss of the anchor is acceptable compared to the risk of hull puncture.

A. CM HEAVY WEATHER PREPARATION — PRE-DEPARTURE: (1) STABILITY CALCULATION: produce final departure stability calculation using the loading computer. Verify: GM exceeds loading manual minimum AND an appropriate margin above minimum for heavy weather (typical recommendation: GM at least 0.5-1.0m above minimum for Force 9+ North Atlantic); check GZ curve meets all intact stability criteria (2008 IS Code); verify trim is within acceptable limits; (2) FLOODING ANGLES: calculate the angle at which the vessel would be at risk of flooding — ventilators, air pipes, or other openings. Ensure this angle has adequate margin above the expected rolling in Force 9; (3) FREE SURFACES: minimise free surfaces in ballast tanks — either top up or press down. Partial tanks create large free surface corrections that reduce effective GM; (4) LASHINGS INSPECTION: physically check all cargo lashings on deck and in holds — direct the bosun and deck gang to retighten any slack lashings. Check hatch covers — all cleats tight, rubber seals intact, cross-joint seals good; (5) DECK FITTINGS: make rounds of the weather deck — secure all portable equipment; check anchor lashings; verify everything on deck is properly secured; (6) BILGES: sound all bilges and ballast tanks — confirm no unexpected water ingress; (7) CREW BRIEFING: brief the watch officers on what speed and heading changes to expect; advise the bosun to keep crew off deck in heavy weather; (8) PASSAGE PLAN REVIEW: review the passage plan with the master — identify alternatives if the weather is worse than forecast.

B. Stability in heavy weather is calculated automatically by the ECDIS loading computer. The Chief Mate only needs to check the final print-out, not independently verify calculations.

C. For a North Atlantic winter passage, the Chief Mate's preparation involves adding extra ballast to maximum capacity regardless of the effect on GM. Maximum ballast always equals safest vessel.

D. Heavy weather preparation is primarily the master's responsibility. The Chief Mate should focus on cargo documentation and hand-over notes rather than stability assessment.

A. CARGO SHIFT — CM INVESTIGATION AND MANAGEMENT: (1) INITIAL ASSESSMENT: 8-degree list unaccounted for by known weights — URGENT. Calculate: with current GM, what weight shift would produce 8 degrees? Formula: d = (W × GG1) / (Δ × GM). This quantifies the possible shift. Stability computer: input the assumed shift and see if it matches observed list; (2) INVESTIGATE CAUSES: (a) Reduce speed and alter course to a more comfortable heading — reduce rolling to minimise further shift; (b) If it is safe to do so, arrange for hold inspection to confirm or identify cargo shift. In Force 9, entry into holds may be impossible safely — wait for a reduction in conditions; (c) Check bilges in all holds — flooding can also cause a list; (d) Check ballast tanks — has a tank emptied or flooded unexpectedly?; (3) CORRECT THE LIST: options to reduce the list: (a) Ballast: pump ballast water to the high side to counteract the list. Use cross-filling of double bottom tanks; (b) Do NOT enter holds to reshift cargo in heavy weather — this is extremely dangerous; (4) STABILITY CALCULATION: recalculate stability with the assumed cargo shift. If GM appears to be reduced significantly — master to consider heading for nearest port of refuge; (5) NOTIFY MASTER: immediately — an 8-degree list is a serious stability situation; (6) MAYDAY READINESS: if list is increasing and stability is deteriorating, prepare for emergency.

B. An 8-degree list can be corrected by transferring fuel oil between port and starboard service tanks. No other investigation is necessary as a list of 8 degrees is within normal operating parameters.

C. Send the bosun's team into the cargo hold immediately to investigate and reshift cargo. Finding the shifted cargo source takes priority over safety considerations in Force 9.

D. Continue passage at full speed. An 8-degree list in heavy weather is caused by dynamic rolling only and will self-correct when the weather improves.