Dutchman BB250 Owner's Manual - Page 4

Browse online or download pdf Owner's Manual for Boating Equipment Dutchman BB250. Dutchman BB250 12 pages. Boom brake

Specifications

These specifications are for conventional, moderate displacement monohulls, and are provided as a rough indication

of which Boom Brake and installation kit should be used. Heavy displacement sailboats or sailboats which will be

undertaking extensive offshore passages must use oversized equipment. Use the next size larger installation kit to start

off. Contact us for more information.

Boom Brake Specifications

Model

Typl Boat Size

BB250

20 - 32' / 6 - 10m

BB250B

20 - 32' / 6 - 10m

BB500

30 - 45' / 9 - 14m

BB500B

30 - 45' / 9 - 14m

BB750

42 - 60' / 13 - 19m

BB750B

42 - 60' / 13 - 19m

The BB250, BB500 and BB750 are used with rigid vangs, where they are fitted just behind the rigid vang, or in a

soft vang application with 2 attachment points (bails) on the boom. They would also be used if you don't have a vang.

The BB250B, BB500B and BB750B have an additional shackle secured to the bottom of the brake. They are used

on boats with 'soft' (block and tackle) vangs. The brake is attached to the vang bail on the boom, while the vang is

shackled to the bottom of the brake.

Line / Hardware Specifications

Brake Boat

250

20-28' / 6-8m

250

26-32' / 8-10m

500

30-38' / 9-11m

500

35-45' / 11-14m

750

42-52' / 13-16m

750

48-60 / 15-18m

These specifications give the minimum SWL's (safe working loads) for the mounting hardware and the line diameter

and length to run the line back to the cockpit. Any parts you supply or use should follow these SWL recommendations.

These specifications are provided as a starting point. You may need to go up one size, depending on what kind of use

you are planning, and if the attachment points are farther inboard than normal.

Max Mainsail area Safe Working Load

250 sq ft / 23m

500 sq ft / 45m

750 sq ft / 68m

Mainsail Area

SWL

200 sq ft / 18m

1,200 / 500 kg

280 sq ft / 25m

1,600 / 700 kg

390 sq ft / 35m

2,250 / 1,000 kg

500 sq ft / 45m

2,700 / 1,200 kg

620 sq ft / 56m

3,500 / 1,600 kg

750 sq ft / 68m

4,100 / 1,800 kg

Page 2

1,600 lbs / 700 kg

2,700 lbs / 1,200 kg

4,100 lbs / 1,800 kg

Model

Line Dia - Length

IK200

1/4" - 36' / 6mm - 11m

IK280

5/16" - 40' / 8mm - 12m

IK390

3/8" - 44' / 10mm - 13m

IK500

7/16"- 50' / 11mm - 15m

IK620

1/2" - 60' / 13mm - 18m

IK750

5/8" - 75' / 16mm - 23m

Pictured are our BB750, top,

BB500, left, and BB500B,

right. The 500 Series is used

on boats 26' to 45' with

mains to 500 square feet.

The 750 Series is used on

boats 42' to 65' with mains to

750 square feet.