Decision systems for offshore racing

Prepare for the race
you are actually sailing.

Race-specific weather briefings, campaign routing and Mini 6.50 roadbooks, built around your course, boat, schedule and operating constraints.

Discuss your campaign Send your race, boat type and start date
CAMPAIGN / DECISION PLOT LIVE INPUT
FORECAST ROUTE DECISION
01 Understand 02 Compare 03 Decide

Support formats

Choose the level of support your campaign needs.

Start with the smallest useful scope. Each service is tailored to the race and agreed before work begins.

01 Live · Race-specific

Weather briefings

Know what is likely, what remains uncertain and what could change the race.

Live briefings led by Marcel Korte. We compare models, assess confidence and translate the developing weather picture into practical considerations for your route and start.

  • Synoptic development and model confidence
  • Routings based on your boat’s polars
  • Key transitions, local effects and race risks
  • Live calls with time for questions
BEST FOR A specific race or regatta
Plan my briefings
02 Bespoke · Ongoing

Campaign weather routing

A dedicated weather and routing resource for the wider campaign.

Ongoing support led by Marcel Korte, from initial route studies and departure planning through campaign-specific forecast analysis and routing. Scope and cadence are built around your campaign and the applicable rules.

  • Pre-campaign weather and route studies
  • Forecast monitoring and alternative scenarios
  • Boat-specific routing and scheduled updates
  • Shoreside support during permitted phases
BEST FOR Extended offshore campaigns
Discuss routing support
03 Pre-race · Mini 6.50

Race roadbooks

Race-specific decision support designed for Mini constraints.

A practical PDF prepared before the start for use when onboard information and outside communication are limited. It turns forecast scenarios and routing output into clear, leg-by-leg cues you can refer to at sea.

  • Course, TSS and exclusion-zone overview
  • Routing scenarios based on your polars
  • Leg-by-leg wind ranges and decision points
  • Indicators to watch as conditions change
BEST FOR Mini sailors preparing for a race
Request a roadbook

Operating principle

Analysis should end in a decision.

More forecast data does not automatically create a better plan. The value is in knowing which scenarios matter and how to recognise them.

01 / INPUT

Boat-specific

We work from your course, polars, schedule and campaign constraints, not a generic regional forecast.

02 / SCENARIOS

Uncertainty made useful

You receive the likely development, meaningful alternatives and indicators that separate them.

03 / OUTPUT

Usable under pressure

The output is structured around timing, decisions and observable cues, so it stays useful offshore.

How it works

A clear scope before any analysis begins.

  1. 01

    Brief us

    Send the race, start date, boat type, available polars and the questions you need answered.

  2. 02

    Define the support

    We agree deliverables, timing, update cadence and price before starting.

  3. 03

    Build the decision system

    We analyse the course, weather and routing scenarios, then deliver the agreed briefings, updates or roadbook.

Who is behind the work

Built from practical offshore racing experience.

Offwatch Labs was founded by offshore navigator Joshua Weber, whose results include an IRC Overall victory in the Rolex Middle Sea Race. Joshua develops the Mini roadbooks and OWL’s navigation education.

Weather briefings and campaign routing are led by Marcel Korte. Across all three services, the standard is the same: analysis must produce a useful decision, indicator or action.

Start a conversation

Tell us what you are preparing for.

Send your race, boat type, start date and the support you are considering. If you are unsure which service fits, we will recommend the smallest useful scope for your campaign.

Discuss my campaign