Swallow Catalina 270 · Lake Lewisville
Plans, drawings and live data

Ship's Systems

The technical side of Swallow — how her systems are arranged, what we know about them, and how the plans change as the refit becomes an as-built record.

The technical library

The Captain's Log tells the story of the work. This section holds the drawings and reference material behind it: how the electrical system is meant to work, what belongs to the engine, and eventually how the sails and rigging are arranged.

Some of these pages will begin as working plans. As the work is completed, they will be updated to show what is actually aboard Swallow. That distinction matters; a plan is useful, but an as-built drawing is what we will need when something stops working later.

Line drawing of a Catalina 270 showing the sail plan, an overhead view of the deck and interior arrangement, and the boat in profile
The Catalina 270 as drawn: sail plan, accommodation and profile.
In hand

Electrical system

Working design · AC and DC

The dual-bank battery architecture, shore-power system, monitoring network, wire and fuse schedule, and the drawings that tie them together.

In hand

Monitoring

Live data · alarms · location

Battery state, shore power, bilge and temperature alarms, and eventually the boat's location and other useful telemetry when nobody is aboard.

In hand

Maintenance log

Service record · what is due

Every service, modification and renewal with a date against it — and, just as usefully, an honest list of what has never been touched. She came to us with no service history; this is the start of one.

Working design

Boat operations

Two-sided checklist · print and web

The sequence from arriving at the berth to sailing, and from preparing to return until Swallow is secure, connected and locked.

Later

Engine plans

Perkins Perama M20

The cooling, fuel, exhaust, starting and charging systems around the M20, built out as we identify each component and trace the plumbing and wiring.

Later

Sail plan

Masthead sloop

The sail inventory, dimensions, reefing arrangements and the working plan for how the boat is set up to sail.

Later

Standing and running rigging

Inspection and replacement record

Rigging dimensions, terminal details, line routes and the eventual as-built record of the re-rig and deck hardware.