Offer

Metocean study

A quantified sea-state conditions analysis, delivered in days, not months. To decide on a site, a route or an operational window without waiting for an in situ measurement campaign.

The principle

Design conditions, without waiting for a campaign

Based on the ERA5 reanalysis (1940 to today) and, where needed, on GLORYS12 currents. A solid design or feasibility basis, available immediately and at a reduced marginal cost.

1940ERA5 reanalysis since

31 kmSpatial resolution

100 ansReturn period

5 jFirst deliverable within

The packages

Three levels, from a point to an offshore structure

Choose the scope suited to your decision. Firm quote after scoping.

Fixed point

from2 500€ excl. VAT

5 working days

The climatological sea state at a precise point: mooring, landfall, measurement point, structure location.

Wind and wave climatology over the chosen period (1993–2024 by default)

Wind and swell roses

Hs / Tp scatter diagram

Extreme values (GEV, Gumbel, POT-GPD), return periods of 1, 10, 50 and 100 years for Hs and the 10 m wind

Operability and persistence table (duration and frequency of windows below threshold)

Deliverables

PDF report, raw JSON data, PNG figures

ERA5GEV / GPDHs / Tp

Route profile

from4 900€ excl. VAT

10 working days

The same analysis, sampled along a route or a corridor, to identify the most constraining segment of a passage.

All of the "Fixed point" content, applied to N points along the track

Exposure per segment and identification of the governing section

Seasonal variation of passage windows

Option: GLORYS12 surface currents along the route

Deliverables

PDF report, per-segment profile, JSON, PNG

ERA5GLORYS12Multi-point

Offshore target

MRE site

from9 500€ excl. VAT

15 to 20 working days

The conditions baseline for a marine renewable energy project or an offshore structure: design conditions and operational windows.

Extreme design conditions (Hs, Tp, wind), return periods up to 100 years

Joint Hs / Tp distributions and environmental contours (IFORM method via virocon)

Wind sea / swell distinction

Persistence analysis for installation and maintenance windows, configurable thresholds (e.g. Hs < 1.5 m for 12 consecutive hours)

Option: currents (GLORYS12), normal and extreme conditions

Deliverables

Extended PDF report, persistence tables, JSON, PNG

IFORM / viroconGLORYS12Offshore design

Comparison

What is included in each package

	Fixed point	Route profile	MRE site
Scope	One point	One route (N points)	One site / structure
Wind & wave climatology
Wind and swell roses
Extremes & return periods (1 to 100 years)
Operability & persistence			Configurable thresholds
Governing segment	—		—
Joint Hs / Tp distributions (IFORM)	—	—
Wind sea / swell distinction	—	—
GLORYS12 surface currents	—	Option	Option
Indicative lead time	5 d	10 d	15–20 d
From (excl. VAT)	2 500 €	4 900 €	9 500 €

Method and limits

Said honestly

A metocean study is not a regulatory measurement campaign. It is a solid design basis, where a campaign takes months and a budget of a different order.

Hindcast data

The analyses rely on the ECMWF ERA5 reanalysis (resolution of about 31 km, hourly step) and on GLORYS12 for currents. These are not in situ measurements: in coastal areas with strong gradients, uncertainty increases.

Local calibration as an option

Calibration against a local buoy or ADCP is available as an option, to reduce uncertainty in sensitive areas and confront the reanalysis with your measurements.

Process

How it works

Brief

You provide the point, the route or the site, and the operational thresholds that matter to you.

Production

Extraction and analysis on the OceanData infrastructure.

Delivery

Within the announced lead time, with a 30-minute debrief.

Iteration

One scoping iteration is included.

Terms: 40 % on order, balance on delivery. Firm quote after scoping; the final price depends on the number of variables and the complexity of the site.

Targets

Who it is primarily for

Primary target: offshore wind. The budget is there, and the need is recurring and mandatory at every phase of the project.

Target	Purchase trigger	Contact
Offshore wind farm developersTarget no. 1	Recurring need at each phase (feasibility, design, O&M)	Studies manager, owner’s engineer, metocean
Offshore and installation contractors	Operational windows, cable laying and foundations	Operations manager, methods
Naval architecture, shipyards (yacht, ferry)	Design conditions and operability	Engineering office, technical management
Ports and coastal infrastructure managers	Access windows, operational safety	Harbour master, engineering
Marine insurers and brokers	Extreme conditions for risk assessment	Underwriting, surveying

Let us scope your project

Give us a point, a route or a site

We come back to you with a firm quote after a first scoping iteration. First deliverable within five working days.