Multi-Asset OTSW Support Calculator

Emergency Response for Multi-Asset Operations with OTSW Cover

Multi-Asset Scenario Tester

Test different asset positions to determine if your ERRV and DCs can cover all five assets within 120 minutes.

Asset Configuration

Asset Names Configuration

Vessel Parameters

Test Results

Click "Test Scenario" to analyze coverage

Rescue Timeline

Field Layout Map

ERRV
E
M
CZ
AL
FW
11.9 nm (065°)
1.1 nm (267°)
1.8 nm (076°)
2.8 nm (262°)
10.2 nm (127°)
11.3 nm (120°)
9.3 nm (131°)
11.5 nm (194°)
10.8 nm (186°)
11.7 nm (199°)
Field Layout Legend
Northern Assets
Southern Cluster
Central ERRV Position
Bearing Lines

Complete Bearing & Distance Matrix

From / To E M CZ AL FW
E - 065° × 11.9nm 127° × 10.2nm 120° × 11.3nm 131° × 9.3nm
M 245° × 11.9nm - 194° × 11.5nm 186° × 10.8nm 199° × 11.7nm
CZ 307° × 10.2nm 014° × 11.5nm - 076° × 1.8nm 267° × 1.1nm
AL 300° × 11.3nm 006° × 10.8nm 256° × 1.8nm - 262° × 2.8nm
FW 311° × 9.3nm 019° × 11.7nm 087° × 1.1nm 082° × 2.8nm -

Multi-Asset OTSW Guidelines

Multi-Asset Requirements

ERRV must be capable of responding to incidents at any covered asset while DCs may be providing OTSW cover at other locations.

OTSW Finish Time

DCs must complete OTSW operations and return personnel to the asset before departing for emergency response.

120-Minute Standard

Total rescue time is measured from alarm to completion of the last DC lift to the ERRV.

Scenario Assumptions

  • ERRV starts moving immediately when alarm is raised
  • DCs complete OTSW operations before departing
  • All vessels travel at maximum safe speed
  • Weather conditions affect all vessels equally

Critical Considerations

  • Verify actual vessel speeds and capabilities
  • Consider weather routing and sea conditions
  • Account for communication delays
  • Review operational procedures