How to Prepare Your Boat for a Marine Survey and Sea Trial

Who this preparation guide is for

This checklist is designed for boat owners, buyers, and brokers coordinating marine surveyor services on yachts, powerboats, and sailboats in Puget Sound. It focuses on practical steps that streamline access, inspection, sea trials, and optional haul-outs.

Owner and buyer preparation checklist

• Access and keys: Ensure keys for cabin, ignition, fuel fills, deck lockers, shore-power pedestals, and any combo locks are on board and labeled.
• Documentation: Place registration/title docs, builder’s plate info (if applicable), prior survey reports, and operator’s manuals in a visible folder.
• Service history: Provide recent maintenance and repair invoices, engine service logs, battery replacement dates, rigging inspections, and upgrades.
• Broker/owner point of contact: Share names and phone contacts for the person granting access, the marina office, and (if needed) the yard.
• Shore power and slip details: Confirm slip number, gate codes, and shore-power availability/adapter type.

Vessel readiness essentials

• Batteries charged: Fully charge house and start banks. Verify the charger is functioning and that battery compartments are accessible.
• Fuel and fluids: Maintain sufficient clean fuel for startup and sea trial. Check engine oil, coolant, gear lube, and hydraulic fluids. Address known leaks beforehand.
• Bilges and limber ways: Clear debris and ensure bilge areas are accessible. Dry standing water where practical so moisture observations are meaningful.
• Propulsion checks: Verify engine starts and runs at the dock. If outboards, ensure secure mounting and fuel supply. For diesels, have spare filters ready.
• Sails and covers: For sailboats, have sails available and manageable. Remove sail and cockpit covers as needed so rigging and deck fittings are accessible.
• Water systems: If de-winterized, fill fresh water partially and pressurize to check for leaks; if still winterized, inform all parties in advance.

Declutter and open inspection points

• Lockers and stowage: Clear heavy gear so lockers, chain lockers, and under-berth spaces can be opened and viewed.
• Engine spaces: Remove stored items from the engine room or compartments. Provide safe footing and adequate lighting.
• Electrical panels: Ensure DC/AC panels, junctions, and battery switches are visible. Label unknown circuits where possible.
• Structural access: Open floorboards and hatches to reveal stringers, bulkheads, keel bolts (where accessible), and steering linkages.
• Safety gear: Lay out PFDs, flares (check dates), fire extinguishers, sound devices, and throwables for verification.

Sea trial readiness

• Crew roles: Designate who will helm, handle lines, and monitor engines. Keep the group small to maintain clear communication.
• Safety and navigation: Verify nav lights, horn, VHF, and basic electronics power on. Have PFDs fitted for all aboard.
• Engine warm-up: Warm engines at the dock, confirm cooling water flow, and check for abnormal alarms before departure.
• Marina coordination: Clear departure/return windows with the marina. Confirm any required escorts or fairway guidance in busy periods.
• Lines and fenders: Rig for a smooth departure and return. Stow loose items that could shift underway.
• Test plan: Be ready to demonstrate typical operating ranges—idle, maneuvering, cruising RPM, and controlled turns—subject to conditions and safety.

Haul-out logistics in Puget Sound

• Schedule early: Coordinate lift times with a local yard that can accommodate your beam, draft, and displacement. Share the yard’s confirmation with all parties.
• Tidal timing: Consider tide height for approach and departure from shallow entrances. Plan buffers around strong currents in constricted channels.
• Transport considerations: Verify if the vessel will arrive by water or trailer. Confirm travel-lift slings, blocking, and any special cradle needs.
• Bottom access: Remove transom plugs (if applicable) and ensure through-hulls are reachable. Have the key for any locked boarding gates.
• Combine tasks: If bottom cleaning is planned, schedule it after the out-of-water inspection unless otherwise agreed.

Weather and seasonal planning

Puget Sound weather can change quickly. Light rain is often workable, but strong winds, fog, or icy docks can limit testing and boarding. Peak seasons can book out marinas and yards weeks ahead. Check marine forecasts, daylight hours (shorter in winter), and avoid days with advisories when a sea trial is planned. Building weather flexibility into your schedule reduces reschedules.

How preparation improves survey accuracy and speed

• Better access = better data: Open spaces and labeled systems help the surveyor observe more components, reducing inconclusive notes.
• Fewer return visits: Charged batteries, ready fuel, and clear lockers minimize delays and repeat trips.
• Cleaner photos and documentation: Tidy spaces produce clearer imagery and faster report assembly.
• Efficient sea trials: A prepared crew and functioning safety gear keep the on-water portion focused and productive.

Post-survey follow-up

• Review recommendations: Prioritize safety-related items first. Engage qualified technicians for items outside routine owner maintenance.
• Retain documentation: Save invoices, photos of completed work, and parts lists. These records are useful for future buyers and insurers.
• Track timelines: If you plan to recheck corrective actions, coordinate availability with the surveyor or service providers.
• Organize for insurance: While formats may vary, having clear proof of corrective work and service records generally streamlines underwriting reviews.