BirdFractional Sloop1923

Bird (Sf. Bay) Parts

Lines here are cut for this rig

Rig: Fractional Sloop
I: 20.25 ft
J: 9.5 ft
P: 32 ft
E: 20.5 ft

Different version? Compare 1 related rigs

Model	I	J	P	E
Bird (Sf. Bay) this page	20.25	9.5	32	20.5
Bird	20.3	9.5	32	20.5

Feet, from MAURIPRO Sailboat Data. If your mast or boom differs from every row, send us your measurements before ordering.

Line type

Grade

Compare grades

Halyards 12

Cruising

Mainsail Halyard

Diameter
10 mm (3/8 in)
Length
84 ft (25.6 m)
Hardware
Shackle

~~List Price: $253.42 USD~~
$188.00 USD

Available to order · 5 options
Performance Cruise

Mainsail Halyard

Diameter
10 mm (3/8 in)
Length
84 ft (25.6 m)
Hardware
Shackle

~~List Price: $687.39 USD~~
$510.00 USD

Available to order · 4 options
Club Racing

Mainsail Halyard

Diameter
10 mm (3/8 in)
Length
84 ft (25.6 m)
Hardware
Shackle

~~List Price: $764.28 USD~~
$567.00 USD

Available to order · 14 options
Grand Prix Racing

Mainsail Halyard

Diameter
8 mm (5/16 in)
Length
84 ft (25.6 m)
Hardware
Shackle

~~List Price: $804.93 USD~~
$597.00 USD

Available to order · 10 options
Cruising

Genoa Halyard

Diameter
10 mm (3/8 in)
Length
54 ft (16.5 m)
Hardware
Shackle

~~List Price: $318.12 USD~~
$236.00 USD

Available to order · 5 options
Performance Cruise

Genoa Halyard

Diameter
10 mm (3/8 in)
Length
54 ft (16.5 m)
Hardware
Shackle

~~List Price: $406.12 USD~~
$301.00 USD

Available to order · 4 options
Club Racing

Genoa Halyard

Diameter
10 mm (3/8 in)
Length
54 ft (16.5 m)
Hardware
Shackle

~~List Price: $834.26 USD~~
$619.00 USD

Available to order · 14 options
Grand Prix Racing

Genoa Halyard

Diameter
8 mm (5/16 in)
Length
54 ft (16.5 m)
Hardware
Shackle

~~List Price: $852.23 USD~~
$632.00 USD

Available to order · 10 options
Cruising

Spinnaker Halyard

Diameter
8 mm (5/16 in)
Length
57 ft (17.4 m)
Hardware
Shackle

~~List Price: $245.98 USD~~
$182.00 USD

Available to order · 5 options
Performance Cruise

Spinnaker Halyard

Diameter
8 mm (5/16 in)
Length
57 ft (17.4 m)
Hardware
Shackle

~~List Price: $294.64 USD~~
$218.00 USD

Available to order · 4 options
Club Racing

Spinnaker Halyard

Diameter
8 mm (5/16 in)
Length
57 ft (17.4 m)
Hardware
Shackle

~~List Price: $771.90 USD~~
$573.00 USD

Available to order · 14 options
Grand Prix Racing

Spinnaker Halyard

Diameter
8 mm (5/16 in)
Length
57 ft (17.4 m)
Hardware
Shackle

~~List Price: $875.03 USD~~
$649.00 USD

Available to order · 10 options
View moreAll Bird (Sf. Bay) halyards & sheets

Made up to the lengths computed from the Bird (Sf. Bay)'s rig dimensions above. Colour and taper are chosen when you add to cart.

Sheets & guys 13

Cruising

Genoa Sheet

Diameter
10 mm (3/8 in)
Length
46 ft (14.0 m)
Hardware
None listed

$69.70 USD

Available to order · 5 options
Performance Cruise

Genoa Sheet

Diameter
10 mm (3/8 in)
Length
46 ft (14.0 m)
Hardware
Soft shackle

~~List Price: $242.68 USD~~
$175.00 USD

Available to order · 4 options
Club Racing

Genoa Sheet

Diameter
10 mm (3/8 in)
Length
46 ft (14.0 m)
Hardware
Soft shackle

~~List Price: $257.20 USD~~
$185.00 USD

Available to order · 14 options
Grand Prix Racing

Genoa Sheet

Diameter
10 mm (3/8 in)
Length
46 ft (14.0 m)
Hardware
Soft shackle

~~List Price: $349.60 USD~~
$254.00 USD

Available to order · 8 options
Cruising

Spinnaker Sheet

Diameter
10 mm (3/8 in)
Length
61 ft (18.6 m)
Hardware
Shackle

~~List Price: $316.36 USD~~
$234.00 USD

Available to order · 5 options
Cruising

Spinnaker Guy

Diameter
10 mm (3/8 in)
Length
46 ft (14.0 m)
Hardware
Shackle

~~List Price: $330.88 USD~~
$245.00 USD

Available to order · 5 options
Performance Cruise

Spinnaker Guy

Diameter
10 mm (3/8 in)
Length
46 ft (14.0 m)
Hardware
Shackle

~~List Price: $407.88 USD~~
$302.00 USD

Available to order · 4 options
Club Racing

Spinnaker Guy

Diameter
10 mm (3/8 in)
Length
46 ft (14.0 m)
Hardware
Shackle

~~List Price: $833.61 USD~~
$618.00 USD

Available to order · 14 options
Grand Prix Racing

Spinnaker Guy

Diameter
10 mm (3/8 in)
Length
46 ft (14.0 m)
Hardware
Shackle

~~List Price: $926.01 USD~~
$687.00 USD

Available to order · 8 options
Club Racing

Asymmetrical Spinnaker Sheet

Diameter
10 mm (3/8 in)
Length
61 ft (18.6 m)
Hardware
None listed

~~List Price: $311.22 USD~~
$231.00 USD

Available to order · 14 options
Grand Prix Racing

Asymmetrical Spinnaker Sheet

Diameter
10 mm (3/8 in)
Length
61 ft (18.6 m)
Hardware
None listed

~~List Price: $432.50 USD~~
$321.00 USD

Available to order · 8 options
Cruising

Gennaker Sheet

Diameter
10 mm (3/8 in)
Length
61 ft (18.6 m)
Hardware
Shackle

~~List Price: $316.36 USD~~
$234.00 USD

Available to order · 5 options
Performance Cruise

Gennaker Sheet

Diameter
10 mm (3/8 in)
Length
61 ft (18.6 m)
Hardware
Shackle

~~List Price: $774.31 USD~~
$574.00 USD

Available to order · 4 options
View moreAll Bird (Sf. Bay) halyards & sheets

Made up to the lengths computed from the Bird (Sf. Bay)'s rig dimensions above. Colour and taper are chosen when you add to cart.

Compare grades

Grade	Rope, as described on each product	Colours	Tapered option	From
Cruising7 lines	Cruiser XTS Polyester Double Braid	Up to 5	No	$69.70
Performance Cruise6 lines	DX Performance SK38 with polyester cover	Up to 4	No	$175.00
Club Racing6 lines	S Cup (Stirotec with polyester cover)	Up to 7	Yes	$185.00
Grand Prix Racing6 lines	DX Cup Dyneema SK78 core with polyester coverTN Racing - Stirotex core / Technora Polyester cover	Up to 5	Yes	$254.00

Rope names are quoted from each product's own description; prices are the lowest option for the Bird (Sf. Bay). Not sure which grade suits your sailing? Ask us.

Winches 1

Harken

Harken Plain Top Winch Radial Size 8
Aluminum Black / One Speed
Sized for this boat · Primary winches (genoa/jib sheets) / halyard winch

~~List Price: $436.55 USD~~
$305.95 USD

Available to order
View moreAll winches

Spinnaker poles 1

Forespar

Forespar Standard Spinnaker Pole 2 in. Dia., 9 ft. 6 in. max. length (for Boats 20-25 ft.)
UXP/UXP Ends
Sized for this boat · Spinnaker pole

~~List Price: $1,020.95 USD~~
$816.76 USD

Available to order
View moreAll spinnaker & whisker poles

Blocks 5

Harken Block

Carbo 75mm Single
Fiddle
Sized for this boat · Mainsheet block A (4:1 fiddle)

$120.95 USD

Available to order
Harken Block

Carbo 75mm Single
Ratchet Fiddle - 150 Cam-Matic / Becket
Sized for this boat · Mainsheet block B (4:1 fiddle)

~~List Price: $319.15 USD~~
$280.95 USD

Available to order
Schaefer Spring Loaded

Lined Slide
Stainless Steel - For: 1 1/4 in (31.0 mm) T-Track
Sized for this boat · Genoa lead block

$379.00 USD

Available to order
Harken Block

Carbo 57mm Single
Fiddle
Sized for this boat · Boom vang fiddle block (4:1)

$68.95 USD

Available to order
Harken Block

Carbo 57mm Single
Fiddle - 150 Cam-Matic / Becket
Sized for this boat · Boom vang fiddle block with cam (4:1)

$184.95 USD

Available to order
View moreAll blocks

Traveler & genoa cars 4

Harken

Harken Traveler Car 1 1/16 in (27.0 mm)
Shackle - Purchase: 3:1
Sized for this boat · Traveler car (Standard 3:1)

~~List Price: $353.00 USD~~
$310.95 USD

Available to order
Harken

Harken ESP End Controls
For Travelers: 1 1/16 in (27.0 mm) - Double Sheave and Cam Cleat (Pair)
Sized for this boat · Traveler end controls

~~List Price: $588.05 USD~~
$517.95 USD

Available to order
Harken Genoa Car

ESP Slider Pinstop
For Tracks: 1 1/16 in (27.0 mm)
Sized for this boat · Genoa lead car (pinstop slider)

~~List Price: $341.00 USD~~
$299.95 USD

Available to order
Harken Block

57mm Aluminum ESP Footblock
Sized for this boat · Genoa sheet footblock

~~List Price: $145.25 USD~~
$109.00 USD

Available to order
View moreAll travelers, tracks & genoa cars

Tracks are sold by length and are not included. Ask us for the track to suit your boat.

Mainsail covers 3

MAURIPRO

MAURIPRO Canvas Shop Mainsail Cover
MZ for booms up to 21.3 ft (6.5 m)

~~List Price: $1,384.99 USD~~
$1,020.00 USD

Available to order · 10 options
MAURIPRO

MAURIPRO Canvas Shop Mainsail Cover
High Neck for booms up to 21.3 ft (6.5 m)

~~List Price: $1,103.26 USD~~
$813.00 USD

Available to order · 10 options
MAURIPRO

MAURIPRO Canvas Shop Mainsail Cover
Horse Blanket for booms up to 21.3 ft (6.5 m)

~~List Price: $1,050.03 USD~~
$773.00 USD

Available to order · 10 options
View moreAll Bird (Sf. Bay) mainsail covers

Parts marked "Sized for this boat" are chosen from the manufacturers' sizing guides (Harken, Forespar, Schaefer) using this boat's published dimensions. Check your boat's equipment before ordering.

Specifications

Builder	Bird
Designer	Fred C.Brewer / Alden & Associates
Years built	1923
Number built	30
Rig	Fractional Sloop
Hull	Long Keel
Construction	Wood
Length overall	30.1 ft 9.2 m
Waterline length	24.7 ft 7.5 m
Beam	7.7 ft 2.35 m
Displacement	9,000 lb 4,082 kg
Ballast	4,600 lb 2,087 kg
I · foretriangle height	20.25 ft 6.17 m
J · foretriangle base	9.5 ft 2.9 m
P · mainsail luff	32 ft 9.75 m
E · mainsail foot	20.5 ft 6.25 m
Forestay length	9.5 ft 2.9 m
100% jib area	96.2 sq ft 8.9 m²
Mainsail area	354.2 sq ft 32.9 m²
Jib + mainsail area	450.4 sq ft 41.8 m²
Cruising spinnaker area	163.5 sq ft 15.3 m²

Sail plan drawn to scale from the rig dimensions above, in feet. Hull and keel are schematic.

Source: MAURIPRO Sailboat Data, updated 2026-07-01. Always confirm against your own boat.

More for the Bird (Sf. Bay)

Other Bird models

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Questions

What Bird (Sf. Bay) parts does MAURIPRO carry?

The Bird (Sf. Bay) page lists halyards and sheets made up to this boat's rig lengths, mainsail covers, sails, winches, blocks, travelers, genoa cars, boom vangs and spinnaker poles sized with manufacturer guides where the boat size allows. Prices and availability shown are live from our catalogue.

How do I know a part fits my Bird (Sf. Bay)?

Halyards and sheets are made up to lengths computed from the Bird (Sf. Bay)'s published rig dimensions (I, J, P, E). Other parts are matched with manufacturer sizing guides and are labelled as sized for this boat. Fit can still depend on your boat's year, builder and rig, so check the product details or ask our technical team before you order.

Where can I find the Bird (Sf. Bay) rig dimensions?

Our Bird (Sf. Bay) Sailboat Data page lists the rig dimensions (I, J, P, E) and other published data we hold for this boat. Figures come from a sailboat database and may differ from your boat as built.