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N&N Marine Consultants

Marine surveying & consultancy · Korea, Asia & Worldwide

Marine surveys

Independent attendance for hull and machinery casualties, P&I condition and pre-entry surveys, newbuilding and conversion supervision, and Marine Warranty Surveys — providing clear, technically robust reports to meet the requirements of insurers, P&I clubs, owners, and legal teams.

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  • 30+ years in the marine business

    Seagoing engineer, superintendent, class surveyor, marine insurance

  • Asia-Pacific attendance

    All ports, repair yards and drydocks in the Asia-Pacific region and elsewhere

  • Survey and consultancy for the insurance industry, owners, lawyers and claim handlers

    Reports written for the claim file

  • Independent practice

    No broking, no equipment sales, no repairs

Survey and consultancy services

Every report is written for the decision-maker who has to rely on it — for example, the underwriter settling a claim, the P&I club accepting an entry, or the owner deciding whether to take delivery.

Shell plating cut out and renewed in drydock, with welders working from cherry pickers alongside the hull.

Hull & Machinery Casualty Surveys

Attendance following damage, machinery breakdown, grounding, or contact, on behalf of underwriters, P&I interests, or owners. We establish the extent of damage, investigate the probable cause, define a reasonable repair scope, and assess repair costs against quoted yard prices. Facts, findings, and professional opinions are clearly distinguished, producing a robust, evidence-based report suitable for claims adjustment, negotiation, and, where required, dispute resolution.

A gas carrier lying at anchor, seen bow on, with cargo tanks and deck cranes visible along her length.

P&I Condition & Pre-Entry Surveys

Condition and pre-entry surveys for clubs and their correspondents, covering structure, hatch covers and closing appliances, machinery, cargo gear, and safety equipment. Deficiencies are graded with recommended rectification timescales the club can attach to entry terms. Hatch cover weathertightness including ultrasonic testing is carried out where instructed.

A shipyard building berth under red and white gantry cranes, with steel sections laid out across the apron.

Newbuilding & Conversion Supervision

Independent owner's representation throughout construction, from machinery installation and outfitting through commissioning, trials, and delivery. We provide milestone inspections, attend class and trial events, identify non-conformities, and drive punch-list close-out. Reporting is tailored to the project programme and the information requirements of owners, lenders, and financiers.

An offshore support vessel lying alongside a quay, seen from ahead, with mooring lines running down to the bollards.

Pre-Purchase, MWS & Towage Approval

Pre-purchase and condition inspections for buyers and charterers, alongside Marine Warranty Survey services covering towage, load-out, and voyage suitability. We provide a decision-grade assessment of the vessel or operation — what is actually there, what it will cost to put right, and what conditions should be met before proceeding.

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Elonys López, founder of N&N Marine Consultants.

About the surveyor

Elonys López is an independent marine surveyor and consultant based in South Korea, attending vessels throughout the Asia-Pacific region. His background is filled with hands-on engineering — time spent in machinery spaces, shipyards, and on building berths. This provides the practical understanding needed not only to identify a defect, but to explain how and why it occurred.

Independence matters: the practice does not broker vessels, sell equipment, or undertake the repairs it recommends. Its sole product is accurate, evidence-based reports — providing the independent technical assessment an underwriter needs to settle a claim, a P&I club needs to set entry conditions, or an owner needs when deciding whether to take delivery.

Career to date

  1. 1989

    Merchant Marine Maritime School, Rio de Janeiro

    Entered the Brazilian merchant marine school and trained for a career in marine engineering.

  2. 15+ years at sea

    Seagoing marine engineer

    Crude oil tankers, LNG carriers, ferries, bulk carriers and specialised vessels — marine engineering, machinery operations, and shipboard systems.

  3. 2007

    Marine Technical Superintendent

    Came ashore with a Danish-based owner and manager, responsible for vessel operations, dry-docking supervision, and compliance with international regulations.

  4. 2008

    Owner's representative and Class Surveyor, China

    Moved into the newbuilding market in China as owner's representative for bulk carrier and tanker construction, and subsequently as a Class Surveyor for newbuildings at two of the most prominent shipyards in China.

  5. 2012 – present

    Marine insurance market

    Hull and machinery damage investigations, insurance claims, pollution assessments, marine warranty surveys, and pre-purchase inspections. Hundreds of surveys worldwide over that period, for shipowners, insurers, and regulators.

Request a survey

Send us the vessel, the location and your instructions. We will revert with our confirmation of availability and a fee proposal.

Only name, email, and type of instruction are required.

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