The OTS CR-4 ComRope is a rugged 7/16” static kernmantle rope with a 4-wire balanced comms cable built into the core—designed for reliable hardwire diver communications. Available in Blue or Yellow. This listing is our preferred configuration: Banana plugs on the surface end and an OTS Hi-USE® connector on the diver end.

If you’ve ever felt like OTS communications can get confusing—you’re not alone.

At Sink or Swim Scuba, we work with dive teams all the time, and we’re happy to help you get your system configured correctly the first time. We keep demo gear available for OTS communications equipment, and we can walk your team through how everything connects (surface station, comm box, diver end, connectors, and best practices).

Our Preferred Configuration (this product)

Surface / Tender end: Banana plugs

Diver end: OTS Hi-USE® connector
This is a clean, reliable setup that integrates well with common OTS hardwire comms configurations (and it keeps troubleshooting simple when you’re training or running operations).

Color Options

Blue

Yellow

Key Features

Static 7/16” kernmantle rope with integrated comms wiring

4-wire (Quad 4 balanced cable) for hardwire communications

100% polyester construction

Approx. 800 lb average breaking strength (rope will break)

Available in multiple lengths (team-friendly options)

Specs (for the specs tab)

Material: 100% Polyester, Kernmantle

Diameter: 7/16” (with wire)

Conductors: 4 wires — Quad 4 Balanced Cable

Breaking Strength: 800 lbs (average) rope will break

Colors: Yellow with Blue strike or Blue with Yellow strike (sold as Yellow or Blue)

Connectors (this listing): Banana plug (surface) to Hi-USE® (diver)

MKIII users: OTS notes you must choose the correct surface connector (Banana vs AMP) to match your MKIII sub-panel. If you’re not sure what you have, call us—we’ll help you confirm before you order